Ep 216. Why Hasn't My Milk Come In? The Science Behind Your Supply

Ep 216. Why Hasn't My Milk Come In? The Science Behind Your Supply

From The Science of Motherhood by Dr Renee White

March 2, 2026 · 16 min · Season 2 · Episode 216

About this episode

This episode explores the complexities of milk supply for new mothers and the biological processes involved.

If you've just had your baby and your milk hasn't arrived yet, the first thing to know is that your body is not failing you. It's actually doing something remarkably complex behind the scenes, and most people, including most healthcare providers, never take the time to explain what that actually looks like. This episode is for every mum who has found herself Googling this question at 2am, wondering if something has gone wrong. It hasn't. But understanding the biology of what's happening can make all the difference in how you feel about it. This is the first episode of our brand new series, The Science Behind , where Dr Renee White takes your real questions and unpacks the science in a way that actually makes sense in real life. You'll Hear About: Why your milk supply started months before your baby arrived What progesterone, prolactin and oxytocin are actually doing to establish your supply Why stress has a measurable impact on your letdown reflex How the demand and supply loop works, and what it means for those early feeds When a delay beyond day five is worth a conversation with your midwife or GP What your body is doing right now is extraordinary. Coordinating multiple…

People in this episode

Host: Dr Renee White

Topics covered

  • milk supply
  • postpartum health
  • hormonal changes
  • breastfeeding
  • maternal health

Keywords

  • milk coming in
  • breastfeeding challenges
  • hormones
  • prolactin
  • oxytocin
  • stress and breastfeeding
  • early feeds

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