Dr. Nyree Penn, DHSc, CAAInventor | Founder | CEO, 🌙 NSOMNIA Sleep · ✨ NeuroRestorative Sleep Scientist | Anesthesiologist Assistant (CAA) | Founder & CEO 🌙 NSOMNIA Sleep Centers™ | Author | Speaker 🌟Redefining Sleep for NeuroRestorative Brain Health

New Episode Dropped 🚨🚨🚨 #shorts

2 Jun 2026 · 1 min

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0:44

Nyree Penn explains why postpartum mood swings hit so hard: oxytocin spikes during pregnancy to bond you with your baby, then crashes after birth. That sharp drop, not estrogen or progesterone shifts, drives the emotional swings and fog new mothers experience.

Chapters

So the main thing with the postpartum— you've had a baby, your hormones are all over the place. Estrogen and progesterone, they really are more for menstruating. But during our pregnancies, what happens is it's the oxytocin. So it's that oxytocin, that ability to bond. You know, we have a new baby. It's ongoing throughout our life, but it's very, very high during pregnancy. We're bringing life into this world. You want that to be very, very high, and it is. But as soon as the baby is born, there's a sudden drop. Usually when we go through these rapid swings in emotions, it's due to a rapid swing of one of our sex hormones, and specifically with pregnancy and postpartum fog, it's oxytocin.

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