This episode I discuss metabolism and how our thyroid hormone and growth hormone control our metabolism. I also clarify that metabolism isn't just about burning energy, it’s about converting energy from different sources into fuels for building and repairing our tissues such as muscle, brain, and tendons and mobilizing energy from body fat storage. I discuss the role of iodine, selenium, and salt for thyroid health, and how specific exercise protocols, amino acids and temperature can dramatically shift levels of growth hormone release in waking and in sleep. I also describe the current landscape of prescription compounds, peptides and other factors for changing levels of thyroid and growth hormone, and some of their risks. Throughout the episode, mechanism and tools grounded in specific mechanisms are discussed. Thank you for your interest in science!

#HubermanLab #Metabolism #Hormones

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Link to recent study on thermal stress and hormones:
Endocrine Effects of Repeated Hot Thermal Stress and Cold Water Immersion in Young Adult Men: https://pubmed.ncbi.nlm.nih.gov/33845653

Timestamps
00:00:00 Introduction
00:06:05 Thyroid & Growth Hormone
00:08:44 Food Shapes: Do They Matter?
00:11:43 Stevia: Naming & Impact
00:13:30 Metabolism 101: Your Brain the Furnace
00:17:33 Releasing Hormones From Your Brain, Stimulating Hormones from Your Pituitary
00:21:04 Thyroid Hormone’s Real Effects: Growth, Repair and Energy Consumption of Tissues
00:22:45 Iodine, L-Tyrosine & Selenium: The Trio Essential For Thyroid Function
00:26:05 How Much Iodine Do We Need? By Food, Supplement or Ocean Air
00:28:09 Selenium For Thyroid: Brazil Nuts & Other Valuable Sources
00:33:05 Selenium For Pregnancy, Prostate Cancer Risk, Acne
00:35:20 “Clean Eating” Downsides: Cruciferous Vegetables, Leeching Iodine
00:39:00 Other Benefits of Iodine: Reducing Inflammation
00:41:00 Why & How Increased Thyroid Increases Metabolism
00:42:12 What To Eat To Support Your Brain
00:43:00 Hyperthyroidism (Too Much) & Hypothyroidism (Too Little)
00:44:35 Menstruation: Thyroid Carbohydrate & Sugar Craving
00:45:33 Ketogenic Diet & Its Effects On Thyroid, Rebound Weight Gain
00:48:39 Growth Hormone: What, Why & How
00:51:18 Growth Hormone (GH) Changes Across The Lifespan & Risks of GH Therapy
00:53:40 How To Powerfully Increase Growth Hormone: Know The Natural TriggerS
00:54:49 Not Eating Within 2hrs of Sleep: Keep Blood Glucose Low(ish) At Sleep
00:55:43 Delta Wave Brain Activity Is the Trigger For Growth Hormone Release
00:58:25 LOW Doses of Melatonin Supplementation For Increasing GH Release
01:01:00 Book: Altered Traits, Binaural Beats? Delta Waves Access
01:04:35 Specific Types & Duration of Exercise That Stimulate Growth Hormone & Warmups
01:08:40 Keeping Low Blood Glucose & Ensuring A Cool Down For Two Phase GH Release
01:10:36 Sex Differences For WHEN During Exercise Growth Hormone and IGF-1 Release Occurs: Males Have To Last Longer
01:14:10 Supplements That Increase Growth Hormone 100-400% (or more): Arginine, Ornithine
01:18:20 Arginine & Exercise Together Can Be Counter-Productive
01:19:50 L-Citrulline Better For Arginine Than Arginine Itself (?!); & Blood Pressure Caution
01:23:09 Growth Hormone Changes Across The Lifespan: No One Escapes
01:26:00 Heat (& Cold) for Triggering Extremely Large Increases In Growth Hormone
01:29:20 Specific Heat Protocols For Increasing Growth Hormone: Up To 16-Fold (?!)
01:34:30 2021 (New) Study: Heat Increases GH, & Lowers Cortisol, No Effects On Testosterone, DHEA Or Prolactin
01:36:00 Prescription Growth Hormone, & Emerging Peptides Therapeutics, Secretagogues Etc.
01:42:25 Synthesis, Summary Of Actionable Steps For Increasing GH and Thyroid Hormone
01:44:00 Zero Cost & Other Ways to Support Our Podcast; & Thank You!

Title Card Photo Credit: Mike Blabac https://www.blabacphoto.com

The Huberman Lab podcast is for general informational purposes only and does not constitute the practice of medicine, nursing or other professional health care services, including the giving of medical advice, and no doctor/patient relationship is formed. The use of information on this podcast or materials linked from this podcast is at the user’s own risk. The content of this podcast is not intended to be a substitute for professional medical advice, diagnosis, or treatment. Users should not disregard or delay in obtaining medical advice for any medical condition they may have and should seek the assistance of their health care professionals for any such conditions.