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

EPISODE · Mar 2, 2026 · 15 MIN

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

from The Science of Motherhood

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 arrivedWhat progesterone, prolactin and oxytocin are actually doing to establish your supplyWhy stress has a measurable impact on your letdown reflexHow the demand and supply loop works, and what it means for those early feedsWhen a delay beyond day five is worth a conversation with your midwife or GPWhat your body is doing right now is extraordinary. Coordinating multiple hormonal systems, responding to your baby's cues, producing something completely new, all while recovering from one of the most physically demanding experiences a human body goes through. The timing of your milk coming in is biology, not a measure of how well you're doing.If you found this episode helpful, share it with someone who needs to hear it. And subscribe so you don't miss an episode of The Science of Motherhood.Resources & Links📲 Connect with Renee on Instagram: @fillyourcup_🌐 Learn more about Dr Renee White and explore Fill Your Cup Doula services🍪 Treat yourself with our Chocolate + Goji lactation cookiesThis episode is proudly supported by Fill Your Cup, Australia's first doula village, with doulas available across Melbourne, Geelong, Sydney, Newcastle, Brisbane, Gold Coast, Hobart and Perth.Disclaimer: The information presented in this podcast by Fill Your Cup is not a substitute for independent professional advice. Nothing contained in this episode is intended to be used as medical advice and it is not intended to be used to diagnose, treat, cure or prevent any disease, nor should it be used for therapeutic purposes or as a substitute for your own health professional's advice.

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

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