Contraceptive Methods

NCERT grounding

NCERT Class XII, Chapter 3 (Reproductive Health), §3.2 places contraception inside the larger problem of population explosion. After describing demographic pressure and the Hum Do Hamare Do campaign, the text lists the qualities of an ideal contraceptive and then enumerates the families of methods used in India. The NIOS Senior Secondary Biology lesson on Reproduction and Population Control repeats the same taxonomy with additional clinical detail. For NEET purposes the NCERT classification is authoritative: examiners draft their distractors directly from its category labels and named examples.

Six families of contraceptives

The chapter groups contraceptive methods into six explicit categories — Natural/Traditional, Barrier, IUDs, Oral contraceptives, Injectables/Implants and Surgical methods — with Emergency contraception sitting alongside as a 72-hour rescue option. No single method satisfies every couple; the choice is matched to age, parity, spacing goals and reversibility requirements under qualified medical advice. The table below is the matching skeleton NEET draws from.

Natural / traditional methods

Natural methods work on the principle of avoiding chances of the ovum and sperms meeting. They are zero-cost, drug-free and free of physiological side effects, but their failure rate is high because they depend entirely on user discipline and cycle predictability. NCERT lists three named techniques in this family, each with its own physiological basis.

Barrier methods

In barrier methods the ovum and sperm are prevented from physically meeting by inserting a barrier. Methods exist for both partners. Barriers carry no hormones and are reversible the instant they are removed, which is why they are the default first-line method in counselling for healthy young couples.

• Condoms (Nirodh) — thin rubber/latex sheaths covering the penis (male condom) or lining the vagina and cervix (female condom). They prevent ejaculated semen from entering the female reproductive tract. Both forms are disposable, self-inserted (preserving privacy), and additionally guard against STIs and AIDS, which is why their use has increased in recent years.
• Diaphragms, cervical caps and vaults — reusable rubber barriers inserted into the female reproductive tract to cover the cervix during coitus. They block sperm from entering through the cervix.
• Spermicidal creams, jellies and foams — used alongside the female barriers above to improve their contraceptive efficiency.

Intra Uterine Devices (IUDs)

IUDs are highly effective, long-acting, reversible devices inserted by trained doctors or nurses into the uterus through the vagina. They split into three named classes in NCERT — and each class has a different mode of action that examiners test by pure recall.

IUDs are called "ideal contraceptives" by NCERT for women who want to delay or space pregnancies, and they are among the most widely accepted methods of contraception in India. Their effectiveness, long action and full reversibility on removal make them clinically attractive — but insertion is a clinical procedure that demands expert hands.

Oral contraceptives & Saheli

Oral contraceptives are small doses of progestogens or progestogen–oestrogen combinations taken in tablet form by females. They are very effective with few side effects and are well accepted. Two distinct dosing regimes are named in NCERT, and NEET routinely tests the difference between them.

Injectables, implants & emergency contraception

Progestogens alone, or in combination with oestrogen, can also be administered as injections or as subdermal implants placed under the skin. Their mode of action mirrors the oral pill — suppression of ovulation, alteration of cervical mucus and the endometrium — but the effective period is much longer than a daily tablet, which improves compliance.

The same hormonal preparations have a second indication. Administration of progestogens, progestogen–oestrogen combinations, or IUDs within 72 hours of coitus is highly effective as emergency contraception to prevent pregnancy from rape or casual unprotected intercourse. The 72-hour window is the most frequently asked fact in this slice of the chapter.

Sterilisation — surgical / terminal methods

Surgical methods, also called sterilisation, are generally advised as a terminal option for couples who do not want more children. Surgical intervention blocks gamete transport: vasectomy in the male (a small part of the vas deferens is removed or tied through a scrotal incision) and tubectomy in the female (a small part of the fallopian tube is removed or tied through an abdominal or vaginal incision). These techniques are highly effective but their reversibility is very poor — for the full anatomical and clinical detail, see the sibling subtopic above.

Worked examples

Common confusion & NEET traps