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Contraceptive Methods – Overview and Comparison

Contraceptive methods are techniques used to prevent unwanted pregnancy. They vary in mechanism, effectiveness, and application, and should be chosen based on individual health needs.

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Things worth knowing about "Contraceptive methods"

Contraceptive methods are techniques used to prevent unwanted pregnancy. They vary in mechanism, effectiveness, and application, and should be chosen based on individual health needs.

What Are Contraceptive Methods?

Contraceptive methods, also known as birth control methods, are techniques, devices, or medications used to prevent pregnancy. They are used by sexually active individuals who wish to avoid conception. The choice of method depends on personal health, lifestyle, family planning goals, and individual tolerability.

Hormonal Contraceptive Methods

Hormonal methods work by altering the female hormonal cycle to suppress ovulation, thicken cervical mucus, or alter the uterine lining. Common options include:

Combined oral contraceptive pill: Contains estrogen and progestogen. Taken daily, it is highly effective when used correctly (Pearl Index below 1).
Progestogen-only pill (mini-pill): Suitable for breastfeeding women and those who cannot tolerate estrogen.
Contraceptive patch: Applied to the skin and releases hormones continuously.
Vaginal ring: Inserted into the vagina and provides hormonal contraception for three weeks.
Hormonal IUD (intrauterine device): A T-shaped device releasing progestogen, effective for up to five years.
Contraceptive implant: A small rod inserted under the skin of the upper arm, effective for up to three years.
Contraceptive injection: A progestogen injection given every three months.
Emergency contraception (morning-after pill): Should be taken within 72 to 120 hours after unprotected intercourse.

Non-Hormonal Contraceptive Methods

Non-hormonal methods do not affect the hormonal balance and are suitable for those who prefer or require hormone-free contraception.

Copper IUD: A copper-bearing intrauterine device that impairs sperm motility. Effective for up to ten years.
Diaphragm and cervical cap: Inserted into the vagina before intercourse to cover the cervix mechanically.
Spermicides: Chemical agents (gels, suppositories, foams) that immobilize or destroy sperm. Best used in combination with other methods.

Barrier Methods

Barrier methods physically prevent sperm from reaching the egg and also offer protection against sexually transmitted infections (STIs).

Male condom: The only contraceptive method that also protects against STIs. Highly effective when used correctly.
Female condom (femidom): Inserted into the vagina before intercourse, also provides STI protection.

Natural Family Planning Methods

Natural methods are based on tracking the menstrual cycle to identify fertile days and avoiding unprotected intercourse during that time.

Symptothermal method: Combines basal body temperature measurement with observation of cervical mucus. Reliable when applied consistently.
Natural Family Planning (NFP): A systematic approach to identifying fertile and infertile days using multiple body signals.
Cycle tracking apps and monitors: Digital tools to support cycle observation; reliability varies.
Withdrawal method (coitus interruptus): Considered unreliable and is not medically recommended as a standalone method.

Surgical Contraception (Permanent Sterilization)

Permanent methods are chosen when no further pregnancies are desired.

Tubal ligation (female sterilization): The fallopian tubes are cut or blocked, preventing eggs and sperm from meeting.
Vasectomy (male sterilization): The vas deferens are cut or blocked to prevent sperm from being released during ejaculation.

Effectiveness: The Pearl Index

The effectiveness of contraceptive methods is measured using the Pearl Index. It indicates how many out of 100 women become pregnant within one year while using a specific method. The lower the index, the more reliable the method. Hormonal methods and intrauterine devices (IUDs) generally have the lowest Pearl Index values.

Choosing the Right Method

The selection of a contraceptive method should always be made in consultation with a healthcare provider. Factors such as age, general health, medications, smoking habits, and personal preferences all play a role. Family planning clinics and gynecologists can provide personalized guidance to help individuals make an informed choice.

References

World Health Organization (WHO) - Medical Eligibility Criteria for Contraceptive Use, 5th Edition (2015). Available at: https://www.who.int/publications/i/item/9789241549158
Hatcher, R.A. et al. - Contraceptive Technology, 21st Edition. Managing Contraception LLC, 2018.
European Society of Contraception and Reproductive Health (ESC) - Guidelines on Contraception. Available at: https://www.eshre.eu

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