Some primates undergo even more extreme childbirth than humans episode artwork

EPISODE · Aug 11, 2026 · 11 MIN

Some primates undergo even more extreme childbirth than humans

from Science Friday · host Flora Lichtman, Rasha Aridi, Lia Betti

Human childbirth is often difficult and incredibly painful—just ask anyone who’s been through it. And for a long time, childbirth seemed to be uniquely difficult for humans. But a new study suggests that we aren’t alone: Some small primates birth offspring whose heads are nearly twice the size of the mother’s pelvic area.   So how do those primates go through difficult childbirths? Why didn’t evolution make ours any easier? And what can this tell us about humankind? Flora explores these questions and more with anthropologist Lia Betti. Guest: Dr. Lia Betti is an associate professor of anthropology at University College London in the UK. Transcripts for each episode are available within 1-3 days at sciencefriday.com. Subscribe to this podcast. Follow our show on Instagram, TikTok, Facebook, and Bluesky @scifri and sign up for our newsletters. Got a science question that’s keeping you up at night? Call us: 877-472-4374 Hosted by Simplecast, an AdsWizz company. See pcm.adswizz.com for information about our collection and use of personal data for advertising.

Episode metadata supplied by the publisher feed · Published Aug 11, 2026

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Scientists have long thought extreme childbirth was unique to humans. But some other primates appear to face similar anatomical challenges.

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Some primates undergo even more extreme childbirth than humans

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