The 'lactational amenorrhea method' (LAM) of contraception is considered highly effective (>98%) only when ALL three criteria are simultaneously met. Which of the following is NOT one of the criteria?
- A The baby is exclusively breastfed (no supplementary feeds)
- B Breastfeeding occurs at least 3 times per day, including at least once at night ✓
- C The woman is still amenorrheic (no menstrual return)
- D The baby is less than 6 months of age
Correct answer: B. Breastfeeding occurs at least 3 times per day, including at least once at night
Explanation
The three LAM criteria are: exclusive breastfeeding (on demand, including at night), amenorrhea (no menstrual return post-delivery), and baby less than 6 months old. All three must be present simultaneously for >98% efficacy. The guideline does not specify a minimum frequency of 3 feeds per day, though on-demand feeding is the underlying mechanism (suppression of GnRH via suckling-induced prolactin). Partial breastfeeding or supplementary feeding markedly reduces efficacy.
Reference: Park's Textbook of Preventive and Social Medicine, 27th ed.
High-yield for: NEET PGINI-CETNExTFMGEUSMLEPLABMRCP
Written and medically reviewed by the StethoPrep medical team.