Poop can be pretty gross, but newborn poop is in a league of its own! We can learn a lot from a baby’s first poop, which forms before it's even had its first meal. Hosted by: Hank Green SciShow is on TikTok! Check us out at https://www.tiktok.com/@scishow ---------- Support SciShow by becoming a patron on Patreon: https://www.patreon.com/scishow ---------- Huge thanks go to the following Patreon supporters for helping us keep SciShow free for everyone forever: Chris Peters, Matt Curls, Kevin Bealer, Jeffrey Mckishen, Jacob, Christopher R Boucher, Nazara, charles george, Christoph Schwanke, Ash, Silas Emrys, Eric Jensen, Adam, Brainard, Piya Shedden, Alex Hackman, James Knight, GrowingViolet, Sam Lutfi, Alisa Sherbow, Jason A Saslow, Dr. Melvin Sanicas, Melida Williams ---------- Looking for SciShow elsewhere on the internet? SciShow Tangents Podcast: http://www.scishowtangents.org/ Facebook: http://www.facebook.com/scishow Twitter: http://www.twitter.com/scishow Instagram: http://instagram.com/thescishow ---------- Sources: https://www.nature.com/articles/s41564-021-00904-0 https://www.sciencedirect.com/science/article/pii/S1931312818303172 https://www.sciencedaily.com/releases/2021/04/210429112409.htm https://www.sciencedaily.com/releases/2020/07/200708105945.htm https://www.sciencedaily.com/releases/2010/08/100827082153.htm https://www.sciencedaily.com/releases/2006/07/060720013112.htm https://www.sciencedaily.com/releases/2015/07/150713143646.htm https://www.sciencedaily.com/releases/2021/05/210510133138.htm Images: https://www.istockphoto.com/photo/something-sweet-for-my-sweet-gm958841812-261822590 https://commons.wikimedia.org/wiki/File:Placenta.svg https://www.istockphoto.com/vector/intestines-guts-flora-on-white-background-digestive-tract-with-bacteria-virus-colon-gm1327872371-412107396 https://www.istockphoto.com/photo/stream-melt-chocolate-spreads-in-waves-hot-cocoa-background-gm1223839420-359633730 https://www.istockphoto.com/vector/pop-art-style-images-of-baby-bottoms-with-varying-skin-color-gm165597282-6524295 https://www.istockphoto.com/vector/baby-internal-organs-gm1320239778-406867627 https://www.istockphoto.com/vector/afro-american-pregnant-woman-holds-her-belly-gm1247876335-363412995 https://www.storyblocks.com/video/stock/red-blood-cells-and-viruses-in-the-blood-stream-in-an-artery-seamless-loop-3d-render-of-hemoglobin-cells-and-erythrocytes-moving-through-a-vein-human-immune-system-biology-and-health-concept-s7k7en0dsk15korqk https://www.istockphoto.com/photo/woman-rejecting-more-alcohol-from-wine-bottle-in-bar-gm1042617766-279128226 https://www.istockphoto.com/photo/specially-trained-in-the-health-of-your-baby-gm1127388841-297120843 https://www.storyblocks.com/video/stock/blue-smoke-on-black-background-cigarette-smoke-smoke-effect-fog-background-abstract-smoke-cloud-in-slow-motion-smoke-in-studio-blue-light-smoke-machine-beewftain2467dm