Which of the following is the most common cause of inadequate milk supply in lactating mothers in the early postpartum period?

Explanation

## Inadequate Milk Supply — Etiology **Key Point:** Inadequate milk supply in the early postpartum period is most commonly caused by **infrequent or ineffective breastfeeding and poor latch**, not maternal nutritional or hydration deficits. ## Mechanism of Milk Production Milk production follows the **law of supply and demand**: - Frequent, effective milk removal → increased prolactin secretion → increased milk synthesis - Infrequent or ineffective removal → reduced prolactin stimulation → decreased milk production - Poor latch → inadequate milk transfer despite adequate production **High-Yield:** The single most modifiable factor in the first 2 weeks postpartum is **breastfeeding frequency and technique**, not maternal nutrition. ## Common Causes of Low Supply — Ranked by Frequency | Cause | Frequency | Onset | Mechanism | |-------|-----------|-------|----------| | **Poor latch / infrequent feeds** | Most common | Days 3–7 | Reduced milk removal → ↓ prolactin | | Maternal stress / pain | Common | Days 1–14 | Inhibits oxytocin reflex | | Maternal malnutrition | Less common early | Weeks 2–4+ | Depletes maternal reserves | | Inadequate fluid intake | Rare in isolation | Weeks 2+ | Mild effect; rarely limiting | | Retained placenta / low prolactin | Rare | Days 1–3 | Endocrine insufficiency | ## Clinical Pearl **Lactation is demand-driven.** A mother with poor nutrition but frequent, effective breastfeeding will produce adequate milk. Conversely, a well-nourished mother who breastfeeds infrequently or with poor latch will have low supply. This is why **lactation support and technique correction** are the first-line interventions, not nutritional supplementation. ## Management Approach 1. **Assess latch** — is it painful? Is milk transfer adequate? 2. **Increase frequency** — aim for 8–12 feeds per 24 hours in first 2 weeks 3. **Optimize positioning** — ensure infant mouth covers areola 4. **Consider lactation consultant** — improves outcomes significantly 5. **Maternal nutrition / hydration** — support but not primary intervention [cite:IAP Guidelines on Infant and Young Child Feeding, IBFAN Lactation Management]