My guest is Dr. Melissa Ilardo, Ph.D., professor of biomedical informatics at the University of Utah. We discuss the interplay between genes and behaviors, including how certain behaviors can improve resilience by changing gene and organ function, as well as natural selection events happening in humans today. We also discuss the immune system–related reasons people find the smells of potential mates attractive—or not. We explore how physical and psychological traits are passed from one generation to the next, and the specific behaviors that can influence gene expression to improve health and performance. Melissa explains her lab’s pioneering research on breath-hold training and how activation of the dive reflex through breath holding can significantly improve oxygen availability by changing spleen size and function. We also delve into the medical uses and ethics of gene editing to cure disease in both babies and adults. For those interested in genes and inheritance, human performance, immune system function, and natural selection, this episode illustrates the remarkable interplay between human nature and nurture. Read the episode show notes: https://go.hubermanlab.com/tceBStZ *Thank you to our sponsors* AG1: https://drinkag1.com/huberman Joovv: https://joovv.com/huberman Eight Sleep: https://eightsleep.com/huberman LMNT: https://drinklmnt.com/huberman Function: https://functionhealth.com/huberman *Follow Huberman Lab* Instagram: https://www.instagram.com/hubermanlab Threads: https://www.threads.net/@hubermanlab X: https://twitter.com/hubermanlab Facebook: https://www.facebook.com/hubermanlab TikTok: https://www.tiktok.com/@hubermanlab LinkedIn: https://www.linkedin.com/in/andrew-huberman Website: https://www.hubermanlab.com Newsletter: https://www.hubermanlab.com/newsletter *Dr. Melissa Ilardo* University of Utah academic profile: https://medicine.utah.edu/faculty/melissa-ilardo Lab website: https://www.superhumanlab.org Superhuman Lab – Media Coverage: https://www.superhumanlab.org/pages/5230 National Geographic article: https://www.nationalgeographic.com/health/article/jeju-korea-women-divers-genetic-adaptations Bodies Remodeled for a Life at Sea (The New York Times): https://www.nytimes.com/2018/04/19/science/bajau-evolution-ocean-diving.html How Asia's Super Divers Evolved for a Life At Sea (The Atlantic): https://www.theatlantic.com/science/archive/2018/04/bajau-sea-nomads-diving-evolution-spleen/558359 ResearchGate: https://www.researchgate.net/profile/Melissa-Ilardo Instagram: https://www.instagram.com/superhumanscilab LinkedIn: https://www.linkedin.com/in/melissa-ilardo *Timestamps* 00:00:00 Melissa Ilardo 00:02:35 Nature vs Nurture, Gene Expression, Eye Color 00:07:06 Sponsors: Joovv & Eight Sleep 00:10:24 Epigenetics, Trauma, Mutations; Hybrid Vigor, Mate Attraction 00:15:47 Globalization; Homo Sapiens, Mating & Evolution; Mutations 00:25:28 Sea Nomads, Bajau & Moken Groups; Free Diving, Dangers & Gasp Reflex 00:32:52 Cultural Traditions, Free Diving & Families; Fishing 00:35:36 Mammalian Dive Reflex, Oxygen, Spleen, Cold Water & Face; Exercise 00:42:43 Sponsors: AG1 & LMNT 00:46:00 Free Diving, Spleen, Thyroid Hormone, Performance Enhancement 00:52:00 Dive Reflex, Immune System; Swimming & Health; Coastal Regions & Genetics 00:55:17 Female Free Divers, Haenyeo, Cold Water, Age, Protein 01:03:20 Human Evolution & Diet, Lactase, Fat 01:05:07 Korean Female Free Divers & Adaptations, Cardiovascular, Pregnancy 01:10:13 Miscarriages & Genetic Selection; Bajau, External Appearance, Mate Selection 01:17:15 Sponsor: Function 01:19:03 Free Diving, Underwater Vision; Super-Performers & Genetics 01:25:01 Cognitive Performance, Autism, Creativity; Genetic Determinism & Mindset 01:36:30 Genetics & Ethics, CRISPR, Embryo Genetic Screening 01:44:36 Admixture, Genetics; Are Humans a Single Species? 01:49:39 Zero-Cost Support, YouTube, Spotify & Apple Follow & Reviews, Sponsors, YouTube Feedback, Protocols Book, Social Media, Neural Network Newsletter Disclaimer & Disclosures: https://www.hubermanlab.com/disclaimer