World Library  
Flag as Inappropriate
Email this Article

Birth control

Article Id: WHEBN0018978770
Reproduction Date:

Title: Birth control  
Author: World Heritage Encyclopedia
Language: English
Subject: Sex education, Abortion in the United States, Unintended pregnancy, Abortion, Condom
Collection: Articles Containing Video Clips, Birth Control, Demography, Medical Technology, Sustainability and Population
Publisher: World Heritage Encyclopedia
Publication
Date:
 

Birth control

Birth control
Intervention
Package of birth control pills
A package of birth control pills
MeSH

Birth control, also known as contraception and fertility control, are methods or devices used to prevent pregnancy.[1] Planning, provision and use of birth control is called family planning.[2][3] Birth control methods have been used since ancient times, but effective and safe methods only became available in the 20th century.[4] Some cultures limit or discourage access to birth control because they consider it to be morally or politically undesirable.[4] The most effective methods of birth control are sterilization by means of vasectomy in males and tubal ligation in females, intrauterine devices (IUDs) and implantable contraceptives. This is followed by a number of hormonal contraceptives including oral pills, patches, vaginal rings, and injections. Less effective methods include barriers such as condoms, diaphragms and contraceptive sponge and fertility awareness methods. The least effective methods are spermicides and withdrawal by the male before ejaculation. Sterilization, while highly effective, is not usually reversible; all other methods are reversible, most immediately upon stopping them.[5] Safe sex, such as the use of male or female condoms, can also help prevent sexually transmitted infections.[6][7] Emergency contraceptives can prevent pregnancy in the few days after unprotected sex. Some regard sexual abstinence as birth control, but abstinence-only sex education may increase teen pregnancies when offered without contraceptive education.[8][9] In teenagers, pregnancies are at greater risk of poor outcomes. Comprehensive sex education and access to birth control decreases the rate of unwanted pregnancies in this age group.[10][11] While all forms of birth control may be used by young people,[12] long-acting reversible birth control such as implants, IUDs, or vaginal rings are of particular benefit in reducing rates of teenage pregnancy.[11] After the delivery of a child, a woman who is not exclusively breastfeeding may become pregnant again after as few as four to six weeks. Some methods of birth control can be started immediately following the birth, while others require a delay of up to six months. In women who are breastfeeding, progestin-only methods are preferred over combined oral contraceptives. In women who have reached menopause, it is recommended that birth control be continued for one year after the last period.[12] About 222 million women who want to avoid pregnancy in developing countries are not using a modern birth control method.[13][14] Birth control use in developing countries has decreased the number of maternal deaths by 40% (about 270,000 deaths prevented in 2008) and could prevent 70% if the full demand for birth control were met.[15][16] By lengthening the time between pregnancies, birth control can improve adult women's delivery outcomes and the survival of their children.[15] In the developing world women's earnings, assets, weight, and their children's schooling and health all improve with greater access to birth control.[17] Birth control increases economic growth because of fewer dependent children, more women participating in the workforce, and less consumption of scarce resources.[17][18]

Contents

  • Methods 1
    • Hormonal 1.1
    • Barrier 1.2
    • Intrauterine devices 1.3
    • Sterilization 1.4
    • Behavioral 1.5
      • Fertility awareness 1.5.1
      • Withdrawal 1.5.2
      • Abstinence 1.5.3
      • Lactation 1.5.4
    • Emergency 1.6
    • Dual protection 1.7
  • Effects 2
    • Health 2.1
    • Finances 2.2
  • Prevalence 3
  • History 4
    • Early history 4.1
    • Birth control movement 4.2
    • Modern methods 4.3
  • Society and culture 5
    • Legal positions 5.1
    • Religious views 5.2
    • World Contraception Day 5.3
    • Misconceptions 5.4
  • Research directions 6
    • Females 6.1
    • Males 6.2
  • Other animals 7
  • References 8
  • Further reading 9
  • External links 10

Methods

Chance of pregnancy during first year of use:[19][20]
Method Typical use Perfect use
No birth control 85% 85%
Combination pill 9% 0.3%
Progestin-only pill 13% 1.1%
Sterilization (female) 0.5% 0.5%
Sterilization (male) 0.15% 0.10%
Condom (female) 21% 5%
Condom (male) 18% 2%
Copper IUD 0.8% 0.6%
Hormonal IUD 0.2% 0.2%
Patch 9% 0.3%
Vaginal ring 9% 0.3%
Depo Provera 6% 0.2%
Implant 0.05% 0.05%
Diaphragm and spermicide 12% 6%
Fertility awareness 24% 0.4–5%
Withdrawal 22% 4%
Lactational amenorrhea method
(6 months failure rate)
0-7.5%[21] <2%[22]
Contraception – How to Prevent Unwanted Pregnancy

Birth control methods include barrier methods, hormonal birth control, intrauterine devices (IUDs), sterilization, and behavioral methods. They are used before or during sex while emergency contraceptives are effective for up to a few days after sex. Effectiveness is generally expressed as the percentage of women who become pregnant using a given method during the first year,[23] and sometimes as a lifetime failure rate among methods with high effectiveness, such as tubal ligation.[24]

The most effective methods are those that are long acting and do not require ongoing health care visits.[25] Surgical sterilization, implantable hormones, and intrauterine devices all have first-year failure rates of less than 1%.[19] Hormonal contraceptive pills, patches or vaginal rings, and the lactational amenorrhea method (LAM), if used strictly, can also have first-year (or for LAM, first-6-month) failure rates of less than 1%.[25] With typical use first-year failure rates are considerably high, at 9%, due to incorrect usage.[19] Other methods such as condoms, diaphragms, and spermicides have higher first-year failure rates even with perfect usage.[25] The American Academy of Pediatrics recommends long acting reversible birth control as first line for young people.[26]

While all methods of birth control have some potential adverse effects, the risk is less than that of pregnancy.[25] After stopping or removing many methods of birth control, including oral contraceptives, IUDs, implants and injections, the rate of pregnancy during the subsequent year is the same as for those who used no birth control.[27]

In those with specific health problems, certain forms of birth control may require further investigations.[28] For women who are otherwise healthy, many methods of birth control should not require a

  • Birth control at DMOZ
  • Family planning : a global handbook for providers : evidence-based guidance developed through worldwide collaboration. (PDF) (Rev. and Updated ed.). Geneva, Switzerland: WHO and Center for Communication Programs. 2011.  
  • Division of Reproductive Health, National Center for Chronic Disease Prevention and Health, Promotion (Jun 21, 2013). "U.s. Selected practice recommendations for contraceptive use, 2013: adapted from the world health organization selected practice recommendations for contraceptive use, 2nd edition.". MMWR. Recommendations and reports : Morbidity and mortality weekly report. Recommendations and reports / Centers for Disease Control 62 (RR-05): 1–60.  
  • "Birth Control Comparison Chart". Cedar River Clinics. 
  • Bulk procurement of birth control by the World Health Organization

External links

  • Speroff, Leon; Darney, Philip D. (November 22, 2010). A clinical guide for contraception (5th ed.). Philadelphia, Pa.: Lippincott Williams & Wilkins. ISBN 978-1-60831-610-6.
  • Stubblefield, Phillip G.; Roncari, Danielle M. (December 12, 2011). "Family Planning", pp. 211–269, in Berek, Jonathan S. (ed.) Berek & Novak's Gynecology, 15th ed. Philadelphia: Lippincott Williams & Wilkins, ISBN 978-1-4511-1433-1.
  • Jensen, Jeffrey T.; Mishell, Daniel R. Jr. (March 19, 2012). "Family Planning: Contraception, Sterilization, and Pregnancy Termination", pp. 215–272, in Lentz, Gretchen M.; Lobo, Rogerio A.; Gershenson, David M.; Katz, Vern L. (eds.) Comprehensive Gynecology, 6th ed. Philadelphia: Mosby Elsevier, ISBN 978-0-323-06986-1.
  • Gavin, L; Moskosky, S; Carter, M; Curtis, K; Glass, E; Godfrey, E; Marcell, A; Mautone-Smith, N; Pazol, K; Tepper, N; Zapata, L; Division of Reproductive Health, National Center for Chronic Disease Prevention and Health Promotion,, CDC (Apr 25, 2014). "Providing Quality Family Planning Services: Recommendations of CDC and the U.S. Office of Population Affairs". MMWR. Recommendations and reports : Morbidity and mortality weekly report. Recommendations and reports / Centers for Disease Control 63 (RR-04): 1–54.  

Further reading

  1. ^ "Definition of Birth control". MedicineNet. Retrieved 9 August 2012. 
  2. ^ Oxford English Dictionary. Oxford University Press. June 2012 (online). 
  3. ^ World Health Organization (WHO). "Family planning". Health topics. World Health Organization (WHO). 
  4. ^ a b c d e f g h i j k Hanson, S.J.; Burke, Anne E. (21 December 2010). "Fertility control: contraception, sterilization, and abortion". In Hurt, K. Joseph; Guile, Matthew W.; Bienstock, Jessica L.; Fox, Harold E.; Wallach, Edward E. The Johns Hopkins manual of gynecology and obstetrics (4th ed.). Philadelphia: Wolters Kluwer Health/Lippincott Williams & Wilkins. pp. 382–395.  
  5. ^ a b Family planning : a global handbook for providers : evidence-based guidance developed through worldwide collaboration. (Rev. and Updated ed. ed.). Geneva, Switzerland: WHO and Center for Communication Programs. 2011.  
  6. ^ Taliaferro, L. A.; Sieving, R.; Brady, S. S.; Bearinger, L. H. (2011). "We have the evidence to enhance adolescent sexual and reproductive health--do we have the will?". Adolescent medicine: state of the art reviews 22 (3): 521–543, xii.  
  7. ^ a b Chin, H. B.; Sipe, T. A.; Elder, R.; Mercer, S. L.; Chattopadhyay, S. K.; Jacob, V.; Wethington, H. R.; Kirby, D.; Elliston, D. B. (2012). "The Effectiveness of Group-Based Comprehensive Risk-Reduction and Abstinence Education Interventions to Prevent or Reduce the Risk of Adolescent Pregnancy, Human Immunodeficiency Virus, and Sexually Transmitted Infections". American Journal of Preventive Medicine 42 (3): 272–294.  
  8. ^ DiCenso A, Guyatt G, Willan A, Griffith L (June 2002). "Interventions to reduce unintended pregnancies among adolescents: systematic review of randomised controlled trials". BMJ 324 (7351): 1426.  
  9. ^ Duffy, K.; Lynch, D. A.; Santinelli, J. (2008). "Government Support for Abstinence-Only-Until-Marriage Education". Clinical Pharmacology & Therapeutics 84 (6): 746–748.  
  10. ^ a b Black, A. Y.; Fleming, N. A.; Rome, E. S. (2012). "Pregnancy in adolescents". Adolescent medicine: state of the art reviews 23 (1): 123–138, xi.  
  11. ^ a b Rowan, S. P.; Someshwar, J.; Murray, P. (2012). "Contraception for primary care providers". Adolescent medicine: state of the art reviews 23 (1): 95–110, x–xi.  
  12. ^ a b Family planning : a global handbook for providers : evidence-based guidance developed through worldwide collaboration. (Rev. and Updated ed. ed.). Geneva, Switzerland: WHO and Center for Communication Programs. 2011. pp. 260–300.  
  13. ^ "Costs and Benefits of Contraceptive Services: Estimates for 2012" (pdf). United Nations Population Fund. June 2012. p. 1. 
  14. ^ Carr, B.; Gates, M. F.; Mitchell, A.; Shah, R. (2012). "Giving women the power to plan their families". The Lancet 380 (9837): 80–82.  
  15. ^ a b c d e f Cleland, J; Conde-Agudelo, A; Peterson, H; Ross, J; Tsui, A (Jul 14, 2012). "Contraception and health.". Lancet 380 (9837): 149–56.  
  16. ^ a b Ahmed, S.; Li, Q.; Liu, L.; Tsui, A. O. (2012). "Maternal deaths averted by contraceptive use: An analysis of 172 countries". The Lancet 380 (9837): 111–125.  
  17. ^ a b c d Canning, D.; Schultz, T. P. (2012). "The economic consequences of reproductive health and family planning". The Lancet 380 (9837): 165–171.  
  18. ^ Van Braeckel, D.; Temmerman, M.; Roelens, K.; Degomme, O. (2012). "Slowing population growth for wellbeing and development". The Lancet 380 (9837): 84–85.  
  19. ^ a b c d e f g h i Trussell, James (May 2011). "Contraceptive failure in the United States". Contraception 83 (5): 397–404.  
    Trussell, James (1 November 2011). "Contraceptive efficacy". In Hatcher, Robert A.; Trussell, James; Nelson, Anita L.; Cates, Willard Jr.; Kowal, Deborah; Policar, Michael S. (eds.). Contraceptive technology (20th revised ed.). New York: Ardent Media. pp. 779–863.  
  20. ^ Division of Reproductive Health, National Center for Chronic Disease Prevention and Health Promotion, Centers for Disease Control and Prevention (CDC) (21 June 2013). "U.S. Selected practice recommendations for contraceptive use, 2013: adapted from the World Health Organization Selected practice recommendations for contraceptive use, 2nd edition". MMWR Recommendations and Reports 62 (5): 1–60.  
  21. ^ Van der Wijden, C; Kleijnen, J; Van den Berk, T (2003). "Lactational amenorrhea for family planning.". Cochrane Database of Systematic Reviews (4): CD001329.  
  22. ^ a b Blenning, CE; Paladine, H (Dec 15, 2005). "An approach to the postpartum office visit.". American family physician 72 (12): 2491–6.  
  23. ^ Brown, Gordon Edlin, Eric Golanty, Kelli McCormack (2000). Essentials for health and wellness (2nd ed. ed.). Sudbury, Mass.: Jones and Bartlett. p. 161.  
  24. ^ Edmonds, edited by D. Keith (2012). Dewhurst's textbook of obstetrics & gynaecology (8th ed. ed.). Chichester, West Sussex: Wiley-Blackwell. p. 508.  
  25. ^ a b c d e f g h i Cunningham, F. Gary; Stuart, Gretchen S. (12 April 2012). "Contraception and sterilization". In Hoffman, Barbara; Schorge, John O.; Schaffer, Joseph I.; Halvorson, Lisa M.; Bradshaw, Karen D.; Cunningham, F. Gary. Williams gynecology (2nd ed.). New York: McGraw-Hill Medical. pp. 132–169.  
  26. ^ "Contraception for Adolescents". Pediatrics. September 29, 2014.  
  27. ^ Mansour, D; Gemzell-Danielsson, K; Inki, P; Jensen, JT (November 2011). "Fertility after discontinuation of contraception: a comprehensive review of the literature". Contraception 84 (5): 465–77.  
  28. ^ a b Organization, World Health (2009). Medical eligibility criteria for contraceptive use (4th ed. ed.). Geneva: Reproductive Health and Research, World Health Organization. pp. 1–10.  
  29. ^ Department of Reproductive Health and Research, Family and Community (2004). Selected practice recommendations for contraceptive use. (2 ed. ed.). Geneva: World Health Organization. p. Chapter 31.  
  30. ^ Tepper, NK; Curtis, KM; Steenland, MW; Marchbanks, PA (May 2013). "Physical examination prior to initiating hormonal contraception: a systematic review.". Contraception 87 (5): 650–4.  
  31. ^ a b c d Family planning : a global handbook for providers : evidence-based guidance developed through worldwide collaboration. (Rev. and Updated ed. ed.). Geneva, Switzerland: WHO and Center for Communication Programs. 2011. pp. 1–10.  
  32. ^ Mackenzie, James (6 December 2013). "The male pill? Bring it on". The Guardian. Retrieved 20 May 2014. 
  33. ^ Ammer, Christine (2009). "oral contraceptive". The encyclopedia of women's health (6th ed.). New York: Facts On File. pp. 312–315.  
  34. ^ Nelson, Anita L.; Cwiak, Carrie (2011). "Combined oral contraceptives (COCs)". In Hatcher, Robert A.; Trussell, James; Nelson, Anita L.; Cates, Willard Jr.; Kowal, Deborah; Policar, Michael S. (eds.). Contraceptive technology (20th revised ed.). New York: Ardent Media. pp. 249–341.   pp. 257–258:
  35. ^ a b Barbara L. Hoffman (2011). "5 Second-Tier Contraceptive Methods—Very Effective". Williams gynecology (2nd ed. ed.). New York: McGraw-Hill Medical.  
  36. ^ a b c d Brito, MB; Nobre, F, Vieira, CS (April 2011). "Hormonal contraception and cardiovascular system". Arquivos brasileiros de cardiologia 96 (4): e81–9.  
  37. ^ Stegeman, BH; de Bastos, M; Rosendaal, FR; van Hylckama Vlieg, A; Helmerhorst, FM; Stijnen, T; Dekkers, OM (Sep 12, 2013). "Different combined oral contraceptives and the risk of venous thrombosis: systematic review and network meta-analysis.". BMJ (Clinical research ed.) 347: f5298.  
  38. ^ Kurver, Carla L.; van der Wijden; Burgers, Jako (4 October 2012). "Samenvatting van de NHG-standaard ‘Anticonceptie’ [Summary of the Dutch College of General Practitioners' practice guideline 'Contraception']". Nederlands Tijdschrift voor Geneeskunde (in Dutch) 156 (41): A5083.  
  39. ^ Burrows, LJ; Basha, M; Goldstein, AT (September 2012). "The effects of hormonal contraceptives on female sexuality: a review.". The journal of sexual medicine 9 (9): 2213–23.  
  40. ^ a b Shulman, LP (October 2011). "The state of hormonal contraception today: benefits and risks of hormonal contraceptives: combined estrogen and progestin contraceptives.". American journal of obstetrics and gynecology 205 (4 Suppl): S9–13.  
  41. ^ Havrilesky, LJ; Moorman, PG; Lowery, WJ; Gierisch, JM; Coeytaux, RR; Urrutia, RP; Dinan, M; McBroom, AJ; Hasselblad, V; Sanders, GD; Myers, ER (July 2013). "Oral Contraceptive Pills as Primary Prevention for Ovarian Cancer: A Systematic Review and Meta-analysis.". Obstetrics and gynecology 122 (1): 139–147.  
  42. ^ Mantha, S.; Karp, R.; Raghavan, V.; Terrin, N.; Bauer, K. A.; Zwicker, J. I. (7 August 2012). "Assessing the risk of venous thromboembolic events in women taking progestin-only contraception: a meta-analysis". BMJ 345 (aug07 2): e4944–e4944.  
  43. ^ Burke, AE (October 2011). "The state of hormonal contraception today: benefits and risks of hormonal contraceptives: progestin-only contraceptives.". American journal of obstetrics and gynecology 205 (4 Suppl): S14–7.  
  44. ^ Rott, H (August 2012). "Thrombotic risks of oral contraceptives.". Current Opinion in Obstetrics and Gynecology 24 (4): 235–40.  
  45. ^ a b Neinstein, Lawrence (2008). Adolescent health care : a practical guide (5th ed. ed.). Philadelphia: Lippincott Williams & Wilkins. p. 624.  
  46. ^ Chaudhuri (2007). Practice Of Fertility Control: A Comprehensive Manual (7th ed.). Elsevier India. p. 88.  
  47. ^ a b Hamilton, Richard (2012). Pharmacology for nursing care (8th ed. ed.). St. Louis, Mo.: Elsevier/Saunders. p. 799.  
  48. ^ Facts for life (4th ed. ed.). New York: United Nations Children's Fund. 2010. p. 141.  
  49. ^ Pray, Walter Steven (2005). Nonprescription product therapeutics (2nd ed. ed.). Philadelphia: Lippincott Williams & Wilkins. p. 414.  
  50. ^ "Condom Use by Adolescents". PEDIATRICS 132 (5): 973–981. 28 October 2013.  
  51. ^ Eberhard, Nieschlag, (2010). Andrology Male Reproductive Health and Dysfunction (3rd ed. ed.). [S.l.]: Springer-Verlag Berlin Heidelberg. p. 563.  
  52. ^ Barbieri, Jerome F. (2009). Yen and Jaffe's reproductive endocrinology : physiology, pathophysiology, and clinical management (6th ed. ed.). Philadelphia, PA: Saunders/Elsevier. p. 873.  
  53. ^ Kuyoh, MA; Toroitich-Ruto, C; Grimes, DA; Schulz, KF; Gallo, MF (January 2003). "Sponge versus diaphragm for contraception: a Cochrane review.". Contraception 67 (1): 15–8.  
  54. ^ Organization, World Health (2009). Medical eligibility criteria for contraceptive use (4th ed. ed.). Geneva: Reproductive Health and Research, World Health Organization. p. 88.  
  55. ^ Winner, B; Peipert, JF; Zhao, Q; Buckel, C; Madden, T; Allsworth, JE; Secura, GM. (2012). "Effectiveness of Long-Acting Reversible Contraception". New England Journal of Medicine 366 (21): 1998–2007.  
  56. ^ a b Committee on Adolescent Health Care Long-Acting Reversible Contraception Working Group, The American College of Obstetricians and, Gynecologists (October 2012). "Committee opinion no. 539: adolescents and long-acting reversible contraception: implants and intrauterine devices.". Obstetrics and gynecology 120 (4): 983–8.  
  57. ^ a b Darney, Leon Speroff, Philip D. (2010). A clinical guide for contraception (5th ed. ed.). Philadelphia, Pa.: Lippincott Williams & Wilkins. pp. 242–243.  
  58. ^ Black, K; Lotke, P; Buhling, KJ; Zite, NB; Intrauterine contraception for Nulliparous women: Translating Research into Action (INTRA), group (October 2012). "A review of barriers and myths preventing the more widespread use of intrauterine contraception in nulliparous women.". The European journal of contraception & reproductive health care : the official journal of the European Society of Contraception 17 (5): 340–50.  
  59. ^ a b c Gabbe, Steven (2012). Obstetrics: Normal and Problem Pregnancies. Elsevier Health Sciences. p. 527.  
  60. ^ Steenland, MW; Tepper, NK; Curtis, KM; Kapp, N (November 2011). "Intrauterine contraceptive insertion postabortion: a systematic review.". Contraception 84 (5): 447–64.  
  61. ^ Hurd, [edited by] Tommaso Falcone, William W. (2007). Clinical reproductive medicine and surgery. Philadelphia: Mosby. p. 409.  
  62. ^ Grimes, D.A., MD (2007). ""Intrauterine Devices (IUDs)" In:Hatcher, RA; Nelson, TJ; Guest, F; Kowal, D". Contraceptive Technology 19th ed. (New York: Ardent Media). 
  63. ^ a b c Marnach, ML; Long, ME; Casey, PM (March 2013). "Current issues in contraception.". Mayo Clinic proceedings. Mayo Clinic 88 (3): 295–9.  
  64. ^ "Popularity Disparity: Attitudes About the IUD in Europe and the United States". Published by Policy Review Published Fall 2007. Retrieved 2010-04-27. 
  65. ^ Adams CE, Wald M (August 2009). "Risks and complications of vasectomy". Urol. Clin. North Am. 36 (3): 331–6.  
  66. ^ Hillard, Paula Adams (2008). The 5-minute obstetrics and gynecology consult. Hagerstwon, MD: Lippincott Williams & Wilkins. p. 265.  
  67. ^ Hillard, Paula Adams (2008). The 5-minute obstetrics and gynecology consult. Hagerstwon, MD: Lippincott Williams & Wilkins. p. 549.  
  68. ^ Hatcher, Robert (2008). Contraceptive technology (19th ed. ed.). New York, N.Y.: Ardent Media. p. 390.  
  69. ^ Moore, David S. (2010). The basic practice of statistics (5th ed. ed.). New York: Freeman. p. 25.  
  70. ^ a b c Deffieux, X; Morin Surroca, M; Faivre, E; Pages, F; Fernandez, H; Gervaise, A (May 2011). "Tubal anastomosis after tubal sterilization: a review.". Archives of gynecology and obstetrics 283 (5): 1149–58.  
  71. ^ a b Shridharani, A; Sandlow, JI (November 2010). "Vasectomy reversal versus IVF with sperm retrieval: which is better?". Current Opinion in Urology 20 (6): 503–9.  
  72. ^ Nagler, HM; Jung, H (August 2009). "Factors predicting successful microsurgical vasectomy reversal.". The Urologic clinics of North America 36 (3): 383–90.  
  73. ^ a b c d Grimes, DA; Gallo, MF; Grigorieva, V; Nanda, K; Schulz, KF (Oct 18, 2004). "Fertility awareness-based methods for contraception.". Cochrane Database of Systematic Reviews (4): CD004860.  
  74. ^ Lawrence, Ruth (2010). Breastfeeding : a guide for the medical professional. (7th ed. ed.). Philadelphia, Pa.: Saunders. p. 673.  
  75. ^ a b Freundl, G; Sivin, I; Batár, I (April 2010). "State-of-the-art of non-hormonal methods of contraception: IV. Natural family planning.". The European journal of contraception & reproductive health care : the official journal of the European Society of Contraception 15 (2): 113–23.  
  76. ^ Jennings, Victoria H.; Burke, Anne E. (1 November 2011). "Fertility awareness-based methods". In Hatcher, Robert A.; Trussell, James; Nelson, Anita L.; Cates, Willard Jr.; Kowal, Deborah; Policar, Michael S. (eds.). Contraceptive technology (20th revised ed.). New York: Ardent Media. pp. 417–434.  
  77. ^ Frank-Herrmann, Petra; Heil, Jörg; Gnoth, Christian; Toledo, Estefania; Baur, Siegfried; Pyper, Cecilia; Jenetzky, Ekkehart; Strowitzki, Thomas; Freundl, Günter (May 2007). "The effectiveness of a fertility awareness based method to avoid pregnancy in relation to a couple's sexual behaviour during the fertile time: a prospective longitudinal study". Human Reproduction 22 (5): 1310–1319.  
  78. ^ a b Organization, World Health (2009). Medical eligibility criteria for contraceptive use (4th ed. ed.). Geneva: Reproductive Health and Research, World Health Organization. pp. 91–100.  
  79. ^ a b Jones, RK; Fennell, J; Higgins, JA; Blanchard, K (June 2009). "Better than nothing or savvy risk-reduction practice? The importance of withdrawal.". Contraception 79 (6): 407–10.  
  80. ^ Killick, SR; Leary, C; Trussell, J; Guthrie, KA (March 2011). "Sperm content of pre-ejaculatory fluid.". Human fertility (Cambridge, England) 14 (1): 48–52.  
  81. ^ "Abstinence". Planned Parenthood. 2009. Retrieved 2009-09-09. 
  82. ^ Murthy, Amitasrigowri S; Harwood, Bryna (2007). Contraception Update (2nd ed.). New York: Springer. pp. Abstract.  
  83. ^ Fortenberry, J. Dennis (2005). "The limits of abstinence-only in preventing sexually transmitted infections". Journal of Adolescent Health 36 (4): 269–70.  , which cites:
    Brückner, Hannah; Bearman, Peter (2005). "After the promise: The STD consequences of adolescent virginity pledges". Journal of Adolescent Health 36 (4): 271–8.  
  84. ^ Kim Best (2005). "Nonconsensual Sex Undermines Sexual Health". Network 23 (4). 
  85. ^ a b Ott, MA; Santelli, JS (October 2007). "Abstinence and abstinence-only education". Current Opinion in Obstetrics and Gynecology 19 (5): 446–52.  
  86. ^ Duffy, K; Lynch, DA; Santelli, J (December 2008). "Government support for abstinence-only-until-marriage education.". Clinical pharmacology and therapeutics 84 (6): 746–8.  
  87. ^ Kowal D (2007). "Abstinence and the Range of Sexual Expression". In Hatcher, Robert A., et al. Contraceptive Technology (19th rev. ed.). New York: Ardent Media. pp. 81–86.  
  88. ^ Feldmann, J.; Middleman, A. B. (2002). "Adolescent sexuality and sexual behavior". Current Opinion in Obstetrics and Gynecology 14 (5): 489–493.  
  89. ^ Thomas, R. Murray (2009). Sex and the American teenager seeing through the myths and confronting the issues. Lanham, Md.: Rowman & Littlefield Education. p. 81.  
  90. ^ Edlin, Gordon (2012). Health & Wellness.. Jones & Bartlett Learning. p. 213.  
  91. ^ Blackburn, Susan Tucker (2007). Maternal, fetal, & neonatal physiology : a clinical perspective (3rd ed. ed.). St. Louis, Mo.: Saunders Elsevier. p. 157.  
  92. ^ "WHO 10 facts on breastfeeding". World Health Organization. April 2005. 
  93. ^ Van der Wijden, Carla; Brown, Julie; Kleijnen, Jos (8 October 2008). "Lactational amenorrhea for family planning". Cochrane Database of Systematic Reviews (4): CD001329.  
  94. ^ a b c Fritz, Marc (2012). Clinical Gynecologic Endocrinology and Infertility. pp. 1007–1008.  
  95. ^ Swisher, Judith Lauwers, Anna. Counseling the nursing mother a lactation consultant's guide (5th ed. ed.). Sudbury, MA: Jones & Bartlett Learning. pp. 465–466.  
  96. ^ Office of Population Research; Association of Reproductive Health Professionals (31 July 2013). "What is the difference between emergency contraception, the 'morning after pill', and the 'day after pill'?". Princeton: Princeton University. Retrieved 7 September 2013. 
  97. ^ a b c Gizzo, S; Fanelli, T; Di Gangi, S; Saccardi, C; Patrelli, TS; Zambon, A; Omar, A; D'Antona, D; Nardelli, GB (October 2012). "Nowadays which emergency contraception? Comparison between past and present: latest news in terms of clinical efficacy, side effects and contraindications.". Gynecological endocrinology : the official journal of the International Society of Gynecological Endocrinology 28 (10): 758–63.  
  98. ^ a b c d Cheng, L; Che, Y; Gülmezoglu, AM (Aug 15, 2012). "Interventions for emergency contraception.". Cochrane Database of Systematic Reviews 8: CD001324.  
  99. ^ Richardson, AR; Maltz, FN (January 2012). "Ulipristal acetate: review of the efficacy and safety of a newly approved agent for emergency contraception.". Clinical therapeutics 34 (1): 24–36.  
  100. ^ "Update on Emergency Contraception". Association of Reproductive Health Professionals. March 2011. Retrieved 20 May 2013. 
  101. ^ Cleland K, Zhu H, Goldstruck N, Cheng L, Trussel T (2012). "The efficacy of intrauterine devices for emergency contraception: a systematic review of 35 years of experience". Human Reproduction 27 (7): 1994–2000.  
  102. ^ Glasier, A; Cameron, ST; Blithe, D; Scherrer, B; Mathe, H; Levy, D; Gainer, E; Ulmann, A (Oct 2011). "Can we identify women at risk of pregnancy despite using emergency contraception? Data from randomized trials of ulipristal acetate and levonorgestrel.". Contraception 84 (4): 363–7.  
  103. ^ Kripke C (September 2007). "Advance provision for emergency oral contraception". Am Fam Physician 76 (5): 654.  
  104. ^ Shrader SP, Hall LN, Ragucci KR, Rafie S (September 2011). "Updates in hormonal emergency contraception". Pharmacotherapy 31 (9): 887–95.  
  105. ^ "Dual protection against unwanted pregnancy and HIV / STDs". Sex Health Exch (3): 8. 1998.  
  106. ^ a b Cates, W., Steiner, M. J. (2002). "Dual Protection Against Unintended Pregnancy and Sexually Transmitted Infections: What Is the Best Contraceptive Approach?". Sexually Transmitted Diseases 29 (3): 168–174.  
  107. ^ "Statement on Dual Protection against Unwanted Pregnancy and Sexually Transmitted Infections, including HIV" (PDF). International Planned Parenthood Federation. May 2000. 
  108. ^ Gupta, Ramesh C. (2011-02-25). Reproductive and Developmental Toxicology. Academic Press. p. 105.  
  109. ^ Country Comparison: Maternal Mortality Rate in The CIA World Factbook
  110. ^ a b Sholapurkar, SL (February 2010). "Is there an ideal interpregnancy interval after a live birth, miscarriage or other adverse pregnancy outcomes?". Journal of obstetrics and gynaecology : the journal of the Institute of Obstetrics and Gynaecology 30 (2): 107–10.  
  111. ^ Lavin, C; Cox, JE (August 2012). "Teen pregnancy prevention: current perspectives.". Current Opinion in Pediatrics 24 (4): 462–9.  
  112. ^ a b c Tsui AO, McDonald-Mosley R, Burke AE (April 2010). "Family planning and the burden of unintended pregnancies". Epidemiol Rev 32 (1): 152–74.  
  113. ^ Carr, B; Gates, MF; Mitchell, A; Shah, R (Jul 14, 2012). "Giving women the power to plan their families.". Lancet 380 (9837): 80–2.  
  114. ^ a b Rosenthal, Elisabeth (June 30, 2013). "American Way of Birth, Costliest in the World". New York Times. 
  115. ^ "Expenditures on Children by Families, 2011". United States Department of Agriculture, Center for Nutrition Policy and Promotion. 
  116. ^ a b c d e f Darroch, JE (March 2013). "Trends in contraceptive use.". Contraception 87 (3): 259–63.  
  117. ^ Darney, Leon Speroff, Philip D. (2010). A clinical guide for contraception (5th ed.). Philadelphia, Pa.: Lippincott Williams & Wilkins. p. 315.  
  118. ^ a b c d Naz, RK; Rowan, S (June 2009). "Update on male contraception.". Current Opinion in Obstetrics and Gynecology 21 (3): 265–9.  
  119. ^ Cleland, JG; Ndugwa, RP; Zulu, EM (Feb 1, 2011). "Family planning in sub-Saharan Africa: progress or stagnation?". Bulletin of the World Health Organization 89 (2): 137–43.  
  120. ^ a b Darroch, JE; Singh, S (May 18, 2013). "Trends in contraceptive need and use in developing countries in 2003, 2008, and 2012: an analysis of national surveys.". Lancet 381 (9879): 1756–1762.  
  121. ^ a b Rasch, V (July 2011). "Unsafe abortion and postabortion care -an overview.". Acta obstetricia et gynecologica Scandinavica 90 (7): 692–700.  
  122. ^ a b c Cuomo, Amy (2010). "Birth control". In O'Reilly, Andrea. Encyclopedia of motherhood. Thousand Oaks, Calif.: Sage Publications. pp. 121–126.  
  123. ^ Lipsey, Richard G.; Carlaw, Kenneth; Bekar, Clifford (2005). "Historical Record on the Control of Family Size". Economic Transformations: General Purpose Technologies and Long-Term Economic Growth. Oxford University Press. pp. 335–40.  
  124. ^ unspecified (2001). "Herbal contraceptives and abortifacients". In Bullough, Vern L. Encyclopedia of birth control. Santa Barbara, Calif.: ABC-CLIO. pp. 125–128.  
  125. ^ McTavish, Lianne (2007). "Contraception and birth control". In Robin, Diana. Encyclopedia of women in the Renaissance : Italy, France, and England. Santa Barbara, Calif.: ABC-CLIO. pp. 91–92.  
  126. ^ Hartmann, B (1997). "Population control I: Birth of an ideology.". International journal of health services : planning, administration, evaluation 27 (3): 523–40.  
  127. ^ Simms, Madeleine (27 January 1977). "Review: A History of the Malthusian League 1877-1927". New Scientist. 
  128. ^ d'Arcy, F (Nov 1977). "The Malthusian League and the resistance to birth control propaganda in late Victorian Britain.". Population studies 31 (3): 429–48.  
  129. ^ Wilkinson Meyer, Jimmy Elaine (2004). Any friend of the movement: networking for birth control, 1920–1940. Ohio State University Press. p. 184.  
  130. ^ Galvin, Rachel (1998). """Margaret Sanger's "Deeds of Terrible Virtue. National Endowment for the Humanities. 
  131. ^ Karen Pastorello (2013). The Progressives: Activism and Reform in American Society, 1893 - 1917. John Wiley & Sons. p. 65.  
  132. ^ Baker, Jean H. (2012). Margaret Sanger : a life of passion (First pbk. edition. ed.). pp. 115–117.  
  133. ^ McCann, Carole Ruth (2010). "Women as Leaders in the Contraceptive Movement". In Karen O'Connor. Gender and Women's Leadership: A Reference Handbook. SAGE. p. 751.  
  134. ^ Hall, Ruth (1977). Passionate Crusader. Harcourt, Brace, Jovanovich. p. 186. 
  135. ^ Marie Carmichael Stopes (1925). The First Five Thousand. London: John Bale, Sons & Danielsson. p. 9.  
  136. ^ Hall, Lesley (2011). The life and times of Stella Browne : feminist and free spirit. London: I. B. Tauris. p. 173.  
  137. ^ Fritz, Marc A.; Speroff, Leon (2011). "Intrauterine contraception". Clinical gynecologic endocrinology and infertility (8th ed.). Philadelphia: Wolters Kluwer Health/Lippincott Williams & Wilkins. pp. 1095–1098.  
  138. ^ Poston, Dudley (2010). Population and Society: An Introduction to Demography. Cambridge University Press. p. 98.  
  139. ^ Kulier, Regina; Kapp, Nathalie; Gülmezoglu, A. Metin; Hofmeyr, G. Justus; Cheng, Linan; Campana, Aldo (November 9, 2011). "Medical methods for first trimester abortion". Cochrane Database of Systematic Reviews (11): CD002855.  
  140. ^ Cottingham J., Germain A., Hunt P. (2012). "Use of human rights to meet the unmet need for family planning". The Lancet 380 (9837): 172–180.  
  141. ^ Susheela Singh; Jacqueline E. Darroch (June 2012). "Adding It Up: Costs and Benefits of Contraceptive Services Estimates for 2012" (PDF). Guttmacher Institute and United Nations Population Fund (UNFPA), 201. 
  142. ^ "About Every Woman Every Child". United Nations Foundation. Retrieved 21 September 2013. 
  143. ^ ACOG (September 9, 2014). "ACOG Statement on OTC Access to Contraception". Retrieved 11 September 2014. 
  144. ^ Srikanthan, A; Reid, RL (February 2008). "Religious and cultural influences on contraception". Journal of obstetrics and gynaecology Canada – Journal d'obstetrique et gynecologie du Canada (JOGC) 30 (2): 129–37.  
  145. ^  
  146. ^  
  147. ^ Bob Digby et al. (2001). Bob Digby, ed. Heinemann 16-19 Geography: Global Challenges Student Book 2nd Edition. Heinemann. p. 158.  
  148. ^ Rengel, Marian (2000). Encyclopedia of birth control. Phoenix, Ariz: Oryx Press. p. 202.  
  149. ^ Bennett, Jana Marguerite (2008). Water is thicker than blood : an Augustinian theology of marriage and singleness. Oxford: Oxford University Press. p. 178.  
  150. ^ Feldman, David M. (1998). Birth Control in Jewish Law. Lanham, MD: Jason Aronson.  
  151. ^ "Hindu Beliefs and Practices Affecting Health Care". University of Virginia Health System. Archived from the original on 2007-05-15. Retrieved 2006-10-06. 
  152. ^ "More Questions & Answers on Buddhism: Birth Control and Abortion". Alan Khoo. Retrieved 2008-06-14. 
  153. ^ Khalid Farooq Akbar. "Family Planning and Islam: A Review". Hamdard Islamicus XVII (3). 
  154. ^ Yusuf Al-Qaradawi, Muhammad Saleh Al-Munajjid. "Contraception: Permissible?," IslamOnline.
  155. ^ a b "World Contraception Day". 
  156. ^ Hutcherson, Hilda (2002). What your mother never told you about s.e.x (1st Perigee ed. ed.). New York: Perigee Book. p. 201.  
  157. ^ Rengel, Marian (2000). Encyclopedia of birth control. Phoenix, Ariz: Oryx Press. p. 65.  
  158. ^ Cottrell, BH (Mar–Apr 2010). "An updated review of evidence to discourage douching.". MCN. The American journal of maternal child nursing 35 (2): 102–7; quiz 108–9.  
  159. ^ Alexander, William (2013). New Dimensions In Women's Health - Book Alone (6th ed.). Jones & Bartlett Publishers. p. 105.  
  160. ^ Sharkey, Harriet (2013). Need to Know Fertility and Conception and Pregnancy. HarperCollins. p. 17.  
  161. ^ Strange, Mary (2011). Encyclopedia of women in today's world. Thousand Oaks, Calif.: Sage Reference. p. 928.  
  162. ^ a b c Jensen, JT (October 2011). "The future of contraception: innovations in contraceptive agents: tomorrow's hormonal contraceptive agents and their clinical implications.". American journal of obstetrics and gynecology 205 (4 Suppl): S21–5.  
  163. ^ Halpern, V; Raymond, EG; Lopez, LM (Sep 26, 2014). "Repeated use of pre- and postcoital hormonal contraception for prevention of pregnancy.". The Cochrane database of systematic reviews 9: CD007595.  
  164. ^ a b Castaño, PM; Adekunle, L (March 2010). "Transcervical sterilization.". Seminars in reproductive medicine 28 (2): 103–9.  
  165. ^ a b Glasier, A (November 2010). "Acceptability of contraception for men: a review.". Contraception 82 (5): 453–6.  
  166. ^ Kogan, P; Wald, M (Feb 2014). "Male contraception: history and development.". The Urologic clinics of North America 41 (1): 145–61.  
  167. ^ Naz, RK (July 2011). "Antisperm contraceptive vaccines: where we are and where we are going?". American journal of reproductive immunology (New York, N.Y. : 1989) 66 (1): 5–12.  
  168. ^ Ojeda, edited by William J. Kovacs, Sergio R. (2011). Textbook of endocrine physiology (6th ed.). Oxford: Oxford University Press. p. 262.  
  169. ^ Millar, Lila (2011). Infectious Disease Management in Animal Shelters. John Wiley & Sons.  
  170. ^ Ackerman, [edited by] Lowell (2007). Blackwell's five-minute veterinary practice management consult (1st ed.). Ames, Iowa: Blackwell Pub. p. 80.  
  171. ^ Boyle, Rebecca (March 3, 2009). "Birth control for animals: a scientific approach to limiting the wildlife population explosion". Popular Science. New York: PopSci.com. 
  172. ^ Kirkpatrick, JF; Lyda, RO; Frank, KM (July 2011). "Contraceptive vaccines for wildlife: a review.". American journal of reproductive immunology (New York, N.Y. : 1989) 66 (1): 40–50.  
  173. ^ Levy, JK (July 2011). "Contraceptive vaccines for the humane control of community cat populations.". American journal of reproductive immunology (New York, N.Y. : 1989) 66 (1): 63–70.  

References

animal shelters require these procedures as part of adoption agreements.[169] In large animals the surgery is known as castration.[170] Birth control is also being considered as an alternative to hunting as a means of controlling overpopulation in wild animals.[171] Contraceptive vaccines have been found to be effective in a number of different animal populations.[172][173]

Other animals

A reversible surgical method under investigation is reversible inhibition of sperm under guidance (RISUG) which consists of injecting a polymer gel, styrene maleic anhydride in dimethyl sulfoxide, into the vas deferens. An injection with sodium bicarbonate washes out the substance and restores fertility. Another is an intravas device which involves putting a urethane plug into the vas deferens to block it. A combination of an androgen and a progestin seems promising, as do selective androgen receptor modulators.[118] Ultrasound and methods to heat the testicles have undergone preliminary studies.[168]

Methods of male birth control include condoms, vasectomies and withdrawal.[165][166] Between 25 and 75% of males who are sexually active would use hormonal birth control if it was available for them.[118][165] A number of hormonal and non-hormonal methods are in trials,[118] and there is some research looking at the possibility of contraceptive vaccines.[167]

Males

A number of methods to perform sterilization via the cervix are being studied. One involves putting quinacrine in the uterus which causes scarring and infertility. While the procedure is inexpensive and does not require surgical skills, there are concerns regarding long-term side effects.[164] Another substance, polidocanol, which functions in the same manner is being looked at.[162] A device called Essure, which expands when placed in the fallopian tubes and blocks them, was approved in the United States in 2002.[164]

[163] A number of alterations of existing contraceptive methods are being studied, including a better female condom, an improved [25] Improvements of existing birth control methods are needed, as around half of those who get pregnant unintentionally are using birth control at the time.

Females

Research directions

There are a number of common misconceptions regarding sex and pregnancy.[156] Douching after sexual intercourse is not an effective form of birth control.[157] Additionally, it is associated with a number of health problems and thus is not recommended.[158] Women can become pregnant the first time they have sexual intercourse[159] and in any sexual position.[160] It is possible, although not very likely, to become pregnant during menstruation.[161]

Misconceptions

The 26th of September is World Contraception Day, devoted to raising awareness and improving education about sexual and reproductive health, with a vision of a world where every pregnancy is wanted.[155] It is supported by a group of governments and international NGOs, including the Asian Pacific Council on Contraception, Centro Latinamericano Salud y Mujer, the European Society of Contraception and Reproductive Health, the German Foundation for World Population, the International Federation of Pediatric and Adolescent Gynecology, International Planned Parenthood Federation, the Marie Stopes International, Population Services International, the Population Council, the United States Agency for International Development (USAID), and Women Deliver.[155]

World Contraception Day

In Islam, contraceptives are allowed if they do not threaten health, although their use is discouraged by some.[153] The Quran does not make any explicit statements about the morality of birth control, but contains statements encouraging having children. Prophet Muhammad also is reported to have said "marry and procreate".[154]

Religions vary widely in their views of the ethics of birth control.[144] The Roman Catholic Church officially only accepts natural family planning in certain cases,[145] although large numbers of Catholics in developed countries accept and use modern methods of birth control.[146][147][148] Among Protestants there is a wide range of views from supporting none to allowing all methods of birth control.[149] Views in Judaism range from the stricter Orthodox sect to the more relaxed Reform sect.[150] Hindus may use both natural and artificial contraceptives.[151] A common Buddhist view is that preventing conception is acceptable, while intervening after conception has occurred is not.[152]

Religious views

In 2010, the United Nations launched the Every Woman Every Child movement to assess the progress toward meeting women's contraceptive needs. The initiative has set a goal of increasing the number of users of modern birth control by 120 million women in the world's 69 poorest countries by the year 2020. Additionally, they aim to eradicate discrimination against girls and young women who seek contraceptives.[141][142] The American Congress of Obstetricians and Gynecologists (ACOG) stated in 2014 recommends that oral birth control pills should be over the counter medications.[143]

Human rights agreements require most governments to provide family planning and contraceptive information and services. These include the requirement to create a national plan for family planning services, remove laws that limit access to family planning, ensure that a wide variety of safe and effective birth control methods are available including emergency contraceptives, make sure there are appropriately trained healthcare providers and facilities at an affordable price, and create a process to review the programs implemented. If governments fail to do the above it may put them in breach of binding international treaty obligations.[140]

Legal positions

Society and culture

In 1909, Richard Richter developed the first intrauterine device made from silkworm gut, which was further developed and marketed in Germany by Ernst Gräfenberg in the late 1920s.[137] Gregory Pincus and John Rock with help from the Planned Parenthood Federation of America developed the first birth control pills in the 1950s, such as mestranol/norethynodrel, which became publicly available in the 1960s.[138] Medical abortion became an alternative to surgical abortion with the availability of prostaglandin analogs in the 1970s and mifepristone in the 1980s.[139]

Modern methods

The first permanent birth-control clinic was established in Britain in 1921 by Marie Stopes working with the Malthusian League.[134] The clinic, run by midwives and supported by visiting doctors,[135] offered mothers birth-control advice and taught them the use of a cervical cap. Her clinic made contraception acceptable during the 1920s by presenting it in scientific terms. Throughout the 1920s, Stopes and other feminist pioneers, including Dora Russell and Stella Browne, played a major role in breaking down taboos about sex. In April 1930 the Birth Control Conference assembled 700 delegates and was successful in bringing birth control and abortion into the political sphere - three months later, the Ministry of Health, in the United Kingdom, allowed local authorities to give birth-control advice in welfare centers.[136]

In the United States, Margaret Sanger and Otto Bobsein popularized the phrase "birth control" in 1914.[129][130] Sanger was mainly active in the United States but had gained an international reputation by the 1930s. She jumped bail in 1914 after her arrest for distributing birth control information and left the United States for the United Kingdom to return in 1915.[131] Sanger established a short-lived birth-control clinic in 1916, which was shut down after eleven days and resulted in her arrest.[132] The publicity surrounding the arrest, trial, and appeal sparked birth control activism across the United States.[133]

The birth control movement developed during the 19th and early 20th centuries.[126] The Malthusian League, based on the ideas of Thomas Malthus, was established in 1877 to educate the public about the importance of family planning and to advocate for getting rid of penalties for promoting birth control.[127] It was founded during the "Knowlton trial" of Annie Besant and Charles Bradlaugh, who were prosecuted for publishing on various methods of birth control.[128]

a cartoon of a woman being chased by a stork with a baby
"And the villain still pursues her", a satirical Victorian era postcard

Birth control movement

In medieval Europe, any effort to halt pregnancy was deemed immoral by the Catholic Church,[122] although it is believed that women of the time still used a number of birth control measures, such as coitus interruptus and inserting lily root and rue into the vagina.[125] Casanova, living in 18th century Italy, described the use of a lambskin covering to prevent pregnancy; however, condoms only became widely available in the 20th century.[122]

The Egyptian Ebers Papyrus from 1550 BCE and the Kahun Papyrus from 1850 BCE have within them some of the earliest documented descriptions of birth control: the use of honey, acacia leaves and lint to be placed in the vagina to block sperm.[122][123] It is believed that in Ancient Greece silphium was used as birth control which, due to its effectiveness and thus desirability, was harvested into extinction.[124]

ancient coin depicting silphium
Ancient silver coin from Cyrene depicting a stalk of silphium

Early history

History

As of 2012, 57% of women of childbearing age want to avoid pregnancy (867 of 1520 million).[120] About 222 million women however were not able to access birth control, 53 million of whom were in sub-Saharan Africa and 97 million of whom were in Asia.[120] This results in 54 million unplanned pregnancies and nearly 80,000 maternal deaths a year.[116] Part of the reason that many women are without birth control is that many countries limit access due to religious or political reasons,[4] while another contributor is poverty.[121] Due to restrictive abortion laws in Sub-Saharan Africa, many women turn to unlicensed abortion providers for unintended pregnancy, resulting in about 2–4% obtaining unsafe abortions each year.[121]

While less used in the developed countries than the developing world, the number of women using IUDs as of 2007 was more than 180 million.[57] Avoiding sex when fertile is used by about 3.6% of women of childbearing age, with usage as high as 20% in areas of South America.[117] As of 2005, 12% of couples are using a male form of birth control (either condoms or a vasectomy) with higher rates in the developed world.[118] Usage of male forms of birth control has decreased between 1985 and 2009.[116] Contraceptive use among women in Sub-Saharan Africa has risen from about 5% in 1991 to about 30% in 2006.[119]

Globally, as of 2009, approximately 60% of those who are married and able to have children use birth control.[116] How frequently different methods are used varies widely between countries.[116] The most common method in the developed world is condoms and oral contraceptives, while in Africa it is oral contraceptives and in Latin America and Asia it is sterilization.[116] In the developing world overall, 35% of birth control is via female sterilization, 30% is via IUDs, 12% is via oral contraceptives, 11% is via condoms, and 4% is via male sterilization.[116]

prevalence of modern birth control map
Percentage of women using modern birth control as of 2010.

Prevalence

The total medical cost for a pregnancy, delivery and care of a newborn in the United States is on average $21,000 for a vaginal delivery and $31,000 for a Caesarean section as of 2012.[114] In most other countries the cost is less than half.[114] For a child born in 2011, an average US family will spend $235,000 over 17 years to raise them.[115]

In the developing world, birth control increases economic growth due to there being fewer dependent children and thus more women participating in the workforce.[17] Women's earnings, assets, body mass index, and their children's schooling and body mass index all improve with greater access to birth control.[17] Family planning via the use of modern birth control is one of the most cost-effective health interventions.[112] For every dollar spent, the United Nations estimates that two to six dollars are saved.[113] These cost savings are related to preventing unplanned pregnancies and decreasing the spread of sexually transmitted illnesses.[112] While all methods are beneficial financially, the use of copper IUDs resulted in the greatest savings.[112]

fertility rate map
Countries by fertility rate as of 2012.

Finances

Teenage pregnancies, especially among younger teens, are at greater risk of adverse outcomes including early birth, low birth weight, and death of the infant.[10] In the United States 82% of pregnancies in those between 15 and 19 are unplanned.[63] Comprehensive sex education and access to birth control are effective in decreasing pregnancy rates in this age group.[111]

Birth control also improves child survival in the developing world by lengthening the time between pregnancies.[15] In this population, outcomes are worse when a mother gets pregnant within eighteen months of a previous delivery.[15][110] Delaying another pregnancy after a miscarriage however does not appear to alter risk and women are advised to attempt pregnancy in this situation whenever they are ready.[110]

Contraceptive use in developing countries is estimated to have decreased the number of maternal deaths by 40% (about 270,000 deaths prevented in 2008) and could prevent 70% of deaths if the full demand for birth control were met.[15][16] These benefits are achieved by reducing the number of unplanned pregnancies that subsequently result in unsafe abortions and by preventing pregnancies in those at high risk.[15]

Contraceptive use and total fertility rate by region
maternal mortality rate map
Maternal mortality rate as of 2010[109]

Health

Effects

Dual protection is the use of methods that prevent both sexually transmitted infections and pregnancy.[105] This can be with condoms either alone or along with another birth control method or by the avoidance of penetrative sex.[106][107] If pregnancy is a high concern using two methods at the same time is reasonable,[106] and two forms of birth control is recommended in those taking the anti-acne drug isotretinoin, due to the high risk of birth defects if taken during pregnancy.[108]

Dual protection

Providing emergency contraceptive pills to women in advance does not affect rates of sexually transmitted infections, condom use, pregnancy rates, or sexual risk-taking behavior.[103][104] All methods have minimal side effects.[98]

[102]

Emergency

[94] In those who are not breastfeeding, fertility may return four weeks after delivery.[94] In those who are exclusively breastfeeding, about 10% begin having periods before three months and 20% before six months.[95], and feeding solids all increase its failure rate.pacifier Feeding formula, pumping instead of nursing, the use of a [94] Failure rates increase to 4–7% at one year and 13% at two years.[93] Six uncontrolled studies of lactational amenorrhea method users found failure rates at 6 months postpartum between 0% and 7.5%.[92] The

Lactation

Abstinence-only sex education does not reduce teenage pregnancy.[7][85] Teen pregnancy rates are higher in students given abstinence-only education, as compared with comprehensive sex education.[85][86] Some authorities recommend that those using abstinence as a primary method have backup method(s) available (such as condoms or emergency contraceptive pills).[87] Deliberate non-penetrative sex without vaginal sex or deliberate oral sex without vaginal sex are also sometimes considered birth control.[88] While this generally avoids pregnancy, pregnancy can still occur with intercrural sex and other forms of penis-near-vagina sex (genital rubbing, and the penis exiting from anal intercourse) where sperm can be deposited near the entrance to the vagina and can travel along the vagina's lubricating fluids.[89][90]

Though some groups advocate total sexual abstinence, by which they mean the avoidance of all sexual activity, in the context of birth control the term usually means abstinence from vaginal intercourse.[81][82] Abstinence is 100% effective in preventing pregnancy; however, not everyone who intends to be abstinent refrains from all sexual activity, and in many populations there is a significant risk of pregnancy from nonconsensual sex.[83][84]

Abstinence

There is little evidence regarding the sperm content of pre-ejaculatory fluid.[79] While some tentative research did not find sperm,[79] one trial found sperm present in 10 out of 27 volunteers.[80] The withdrawal method is used as birth control by about 3% of couples.[75]

The withdrawal method (also known as coitus interruptus) is the practice of ending intercourse ("pulling out") before ejaculation.[78] The main risk of the withdrawal method is that the man may not perform the maneuver correctly or in a timely manner.[78] First-year failure rates vary from 4% with perfect usage to 22% with typical usage.[19] It is not considered birth control by some medical professionals.[25]

Withdrawal

Fertility awareness methods involve determining the most fertile days of the menstrual cycle and avoiding unprotected intercourse.[73] Techniques for determining fertility include monitoring basal body temperature, cervical secretions, or the day of the cycle.[73] They have typical first-year failure rates of 24%; perfect use first-year failure rates depend on which method is used and range from 0.4% to 5%.[19] The evidence on which these estimates are based, however, is poor as the majority of people in trials stop their use early.[73] Globally, they are used by about 3.6% of couples.[75] If based on both basal body temperature and another primary sign, the method is referred to as symptothermal. Overall first-year failure rates of <2% to 20% have been reported in clinical studies of the symptothermal method.[76][77]

Fertility awareness

Behavioral methods involve regulating the timing or method of intercourse to prevent introduction of sperm into the female reproductive tract, either altogether or when an egg may be present.[73] If used perfectly the first-year failure rate may be around 3.4%, however if used poorly first-year failure rates may approach 85%.[74]

Behavioral

Although sterilization is considered a permanent procedure,[70] it is possible to attempt a tubal reversal to reconnect the fallopian tubes or a vasectomy reversal to reconnect the vasa deferentia. In women the desire for a reversal is often associated with a change in spouse.[70] Pregnancy success rates after tubal reversal are between 31 and 88%, with complications including an increased risk of ectopic pregnancy.[70] The number of males who request reversal is between 2 and 6%.[71] Rates of success in fathering another child after reversal are between 38 and 84%; with success being lower the longer the time period between the original procedure and the reversal.[71] Sperm extraction followed by in vitro fertilization may also be an option in men.[72]

This decision may cause regret in some men and women. Of women aged over 30 who have undergone tubal ligation, about 5% regret their decision, as compared with 20% of women aged under 30.[4] By contrast, less than 5% of men are likely to regret sterilization. Men more likely to regret sterilization are younger, have young or no children, or have an unstable marriage.[68] In a survey of biological parents, 9% stated they would not have had children if they were able to do it over again.[69]

Surgical sterilization is available in the form of tubal ligation for women and vasectomy for men.[4] There are no significant long-term side effects, and tubal ligation decreases the risk of ovarian cancer.[4] Short term complications are twenty times less likely from a vasectomy than a tubal ligation.[4][65] After a vasectomy, there may be swelling and pain of the scrotum which usually resolves in a week or two.[66] With tubal ligation, complications occur in 1 to 2 percent of procedures with serious complications usually due to the anesthesia.[67] Neither method offers protection from sexually transmitted infections.[4]

Sterilization

While copper IUDs may increase menstrual bleeding and result in more painful cramps[62] hormonal IUDs may reduce menstrual bleeding or stop menstruation altogether.[59] Cramping can be treated with NSAIDs.[63] Other potential complications include expulsion (2–5%) and rarely perforation of the uterus (less than 0.7%).[59][63] A previous model of the intrauterine device (the Dalkon shield) was associated with an increased risk of pelvic inflammatory disease, however the risk is not affected with current models in those without sexually transmitted infections around the time of insertion.[64]

Evidence supports effectiveness and safety in adolescents[56] and those who have and have not previously had children.[58] IUDs do not affect breastfeeding and can be inserted immediately after delivery.[59] They may also be used immediately after an abortion.[60] Once removed, even after long term use, fertility returns to normal immediately.[61]

[57] As of 2007, IUDs are the most widely used form of reversible contraception, with more than 180 million users worldwide.[56] Among types of birth control, they along with birth control implants result in the greatest satisfaction among users.[4] The current

Intrauterine devices

Contraceptive sponges combine a barrier with a spermicide.[25] Like diaphragms, they are inserted vaginally before intercourse and must be placed over the cervix to be effective.[25] Typical failure rates during the first year depend on whether or not a woman has previously given birth, being 24% in those who have and 12% in those who have not.[19] The sponge can be inserted up to 24 hours before intercourse and must be left in place for at least six hours afterward.[25] Allergic reactions[53] and more severe adverse effects such as toxic shock syndrome have been reported.[54]

Male condoms and the diaphragm with spermicide have typical use first-year failure rates of 18% and 12%, respectively.[19] With perfect use condoms are more effective with a 2% first-year failure rate versus a 6% first-year rate with the diaphragm.[19] Condoms have the additional benefit of helping to prevent the spread of some sexually transmitted infections such as HIV/AIDS.[5]

Globally, condoms are the most common method of birth control.[46] Male condoms are put on a man's erect penis and physically block ejaculated sperm from entering the body of a sexual partner.[47] Modern condoms are most often made from latex, but some are made from other materials such as polyurethane, or lamb's intestine.[47] Female condoms are also available, most often made of nitrile, latex or polyurethane.[48] Male condoms have the advantage of being inexpensive, easy to use, and have few adverse effects.[49] Making condoms available to teenagers does not appear to affect the age of onset of sexual activity or its frequency.[50] In Japan about 80% of couples who are using birth control use condoms, while in Germany this number is about 25%,[51] and in the United States it is 18%.[52]

Barrier contraceptives are devices that attempt to prevent pregnancy by physically preventing sperm from entering the uterus.[45] They include male condoms, female condoms, cervical caps, diaphragms, and contraceptive sponges with spermicide.[45]

A rolled up male condom

Barrier

Hormonal contraception is available in a number of different forms, including oral pills, implants under the skin, injections, patches, IUDs and a vaginal ring. They are currently available only for women, although hormonal contraceptives for men have and are being clinically tested.[32] There are two types of oral birth control pills, the combined oral contraceptive pills (which contain both progesterone and oesrogen) and the progestogen-only pills (sometimes called minipills).[33] If either is taken during pregnancy, they do not increase the risk of miscarriage nor cause birth defects.[31] Both types of birth control pills prevent fertilization mainly by inhibiting ovulation and thickening cervical mucous.[34][35] Their effectiveness depends on the user remembering to take the pills.[31] The may also change the lining of the uterus and thus decrease implantation.[35] Combined hormonal contraceptives are associated with a slightly increased risk of venous and arterial blood clots.[36] Venous clots, on average, increase from 2.8 to 9.8 per 10,000 women years[37] which is still less than that associated with pregnancy.[36] Due to this risk, they are not recommended in women over 35 years of age who continue to smoke.[38] The effect on sexual desire is varied, with increase or decrease in some but with no effect in most.[39] Combined oral contraceptives reduce the risk of ovarian cancer and endometrial cancer and do not change the risk of breast cancer.[40][41] They often reduce menstrual bleeding and painful menstruation cramps.[31] The lower doses of estrogen released from the vaginal ring may reduce the risk of breast tenderness, nausea, and headache associated with higher dose estrogen products.[40] Progestin-only pills, injections and intrauterine devices are not associated with an increased risk of blood clots and may be used by women with previous blood clots in their veins.[36][42] In those with a history of arterial blood clots, non-hormonal birth control or a progestin-only method other than the injectable version should be used.[36] Progestin-only pills may improve menstrual symptoms and can be used by breastfeeding women as they do not affect milk production. Irregular bleeding may occur with progestin-only methods, with some users reporting no periods.[43] The progestins, drospirenone and desogestrel minimize the androgenic side effects but increase the risks of blood clots and are thus not first line.[44] The perfect use first-year failure rate of the injectable progestin, Depo-Provera, is 0.2%; the typical use first failure rate is 6%.[19]

Hormonal

[28]

This article was sourced from Creative Commons Attribution-ShareAlike License; additional terms may apply. World Heritage Encyclopedia content is assembled from numerous content providers, Open Access Publishing, and in compliance with The Fair Access to Science and Technology Research Act (FASTR), Wikimedia Foundation, Inc., Public Library of Science, The Encyclopedia of Life, Open Book Publishers (OBP), PubMed, U.S. National Library of Medicine, National Center for Biotechnology Information, U.S. National Library of Medicine, National Institutes of Health (NIH), U.S. Department of Health & Human Services, and USA.gov, which sources content from all federal, state, local, tribal, and territorial government publication portals (.gov, .mil, .edu). Funding for USA.gov and content contributors is made possible from the U.S. Congress, E-Government Act of 2002.
 
Crowd sourced content that is contributed to World Heritage Encyclopedia is peer reviewed and edited by our editorial staff to ensure quality scholarly research articles.
 
By using this site, you agree to the Terms of Use and Privacy Policy. World Heritage Encyclopedia™ is a registered trademark of the World Public Library Association, a non-profit organization.
 



Copyright © World Library Foundation. All rights reserved. eBooks from World eBook Library are sponsored by the World Library Foundation,
a 501c(4) Member's Support Non-Profit Organization, and is NOT affiliated with any governmental agency or department.