Birth runs on oxytocin.
The hormone of connection moves labour, lets milk flow and draws you and your baby close. We make the science simple, visual and usable in the moment.
Where are you starting from?
One hormone. Three big jobs.
From the first weeks of pregnancy to the fourth trimester, the same hormone is doing the work. Here's what it does, and when.
It builds the bond.
Levels rise as your pregnancy grows, and your womb builds oxytocin receptors ready for labour. Early research links it to bonding with your baby before you meet.
It moves labour.
Oxytocin drives the contractions that open the body and bring baby down. It flows best when you feel safe, warm and unobserved.
It lets milk and love flow.
It powers the let-down reflex and peaks in the hour after birth, one of the highest levels of your life. Skin to skin keeps it flowing.
Nine links. One loop.
Oxytocin is a tiny molecule. Nine amino acids, six held in a ring by a sulphur bridge, three trailing behind. The smallest things carry the most, and birth is chemistry as much as it is courage.

What I saw across the world.
Across many births, and working with women all over the world, I watched the same thing happen again and again. When a woman felt safe and connected, the whole room changed. Now I know the chemistry behind it. I'm a retired doula and hypnobirthing practitioner, and the author of The Fearless Birth Book, The Fearless Birth Journal and my new book, The Biology of Belonging. I draw the science so it makes sense at 3am, not just on paper.
The Fearless Birth Podcast
Conversations on oxytocin and connection for mother and baby. Scientists, midwives, mothers. No fluff.
The Fearless Birth books
The visual guide to pregnancy and birth, and the journal to go with it. Hundreds of illustrations. Plain English. Evidence first.
The Fearless Birth Book
Find your power, influence your birth. The illustrated guide to pregnancy, labour and the weeks after.
Get the book
The Fearless Birth Journal
Growing your mind-body connection throughout pregnancy. The companion to the book, to write in as you go.
Get the journal