# Your Period Blood Has a Weird Origin Story: Spiral Arteries, Uterine Milk, and Monkey Eyeballs

Page: https://stenobird.com/podcast/cramped-7088693/your-period-blood-has-a-weird-origin-story-spiral-arteries-uterine-milk-and-monkey-eyeballs
Text version: https://stenobird.com/podcast/cramped-7088693/your-period-blood-has-a-weird-origin-story-spiral-arteries-uterine-milk-and-monkey-eyeballs.md
Podcast: [CRAMPED](https://stenobird.com/podcast/cramped-7088693)
Published: 2026-05-08T07:00:00+00:00
Episode link: https://rss.art19.com/episodes/b6fb3de0-1e2e-48ad-89a5-e70258db0a67.mp3?rss_browser=BAhJIg90cmFuc2NyaWJyBjoGRVQ%3D--952c5701c84ad333c69d5faa668f8177091704f0
Audio file: https://rss.art19.com/episodes/b6fb3de0-1e2e-48ad-89a5-e70258db0a67.mp3?rss_browser=BAhJIg90cmFuc2NyaWJyBjoGRVQ%3D--952c5701c84ad333c69d5faa668f8177091704f0
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Duration seconds: 941

## Resource

PATREON-ONLY EPISODE TEASER Join the CRAMPED Patreon (even at the free tier!) to listen to the full episode: https://patreon.com/cramped I started research for a totally normal episode about spiral arteries in the uterine lining, and SHIT GOT WEIRD. Get ready for a deep dive into where period blood comes from, all the new organs and tissue you grow every month, and how science got the info on how it all works. CRAMPED episodes are intended for informational and entertainment purposes only, and are not medical advice. See Privacy Policy at https://art19.com/privacy and California Privacy Notice at https://art19.com/privacy#do-not-sell-my-info .

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## Transcript

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