# Selfies Predict Cancer, Dirty Feed, Bone Vibration, and more...  : 1459

Page: https://stenobird.com/podcast/the-human-upgrade-biohacking-for-longevity-performance-1031629/selfies-predict-cancer-dirty-feed-bone-vibration-and-more-1459
Text version: https://stenobird.com/podcast/the-human-upgrade-biohacking-for-longevity-performance-1031629/selfies-predict-cancer-dirty-feed-bone-vibration-and-more-1459.md
Podcast: [The Human Upgrade: Biohacking for Longevity & Performance](https://stenobird.com/podcast/the-human-upgrade-biohacking-for-longevity-performance-1031629)
Published: 2026-05-01T08:30:00+00:00
Episode link: https://dts.podtrac.com/redirect.mp3/mgln.ai/e/p394/rss.art19.com/episodes/557a80f1-3d90-4ab1-b409-7299864f41a9.mp3?rss_browser=BAhJIg90cmFuc2NyaWJyBjoGRVQ%3D--952c5701c84ad333c69d5faa668f8177091704f0
Audio file: https://dts.podtrac.com/redirect.mp3/mgln.ai/e/p394/rss.art19.com/episodes/557a80f1-3d90-4ab1-b409-7299864f41a9.mp3?rss_browser=BAhJIg90cmFuc2NyaWJyBjoGRVQ%3D--952c5701c84ad333c69d5faa668f8177091704f0
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Duration seconds: 639

## Resource

This week's stories:   *Mud Playgrounds Double Kids' Bacterial Diversity and Spike Immune Genes 30%  Finland swapped rubber playground surfaces for natural soil and mud across eight kindergartens — and after just one month, kids in dirt had twice the bacterial species diversity on their skin and a 30% increase in expression of ten immune-related genes. Dave breaks down why your immune system requires microbial exposure to calibrate properly, what the hygiene hypothesis actually means for adults, and the dead-simple weekly habit that primes your innate immunity the same way. Sources:  https://creators.yahoo.com/lifestyle/story/finland-replaced-artificial-playground-surfaces-with-natural-elements-like-mud-and-soil--and-the-results-surprised-even-researchers-184318556.html   https://www.sciencedaily.com/releases/2026/04/mud-playground-immunity.htm   *Mixing Exercise Types Cuts All-Cause Mortality Up to 40% in 170,000-Person Study  A 30-year BMJ Medicine cohort study found that people who rotate at least three different types of exercise weekly see 19 to 40% lower all-cause mortality — and that benefit held independent of total training volume. Dave explains why variety is a distinct biological signal, not a motivation trick, and why grinding more of the same thing is leaving longevity gains on the table. Sources:  https://bmjmedicine.bmj.com/content/early/2026/04/26/bmjmed-2025-001513   https://www.sciencedaily.com/releases/2026/04/260426012305.htm   https://www.theguardian.com/society/2026/apr/26/exercise-diversity-mortality   *Facial Aging Rate from Photos Predicts Cancer Survival Better Than Blood Biomarkers  AI analysis of serial facial photos in 1,000+ cancer patients found that comp…

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