The Biology of Hair and Hair Growth

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During today's podcast and on many previous episodes of the Huberman Lab podcast, we discuss supplements. Many people derive tremendous benefit from them for things like enhancing sleep, hormone support, focus, and more. If you're not already following me on social media, I am Huberman Lab on Instagram, Twitter, Facebook, and LinkedIn. And if you haven't already subscribed to our Neural Network newsletter, this is a zero cost newsletter that we send out each month.

In this episode, I explain the biology of hair, hair growth, why hair growth slows and what causes hair to stop growing and/or “fall out.” I discuss the essential role of hair stem cells and other supporting biological factors for healthy hair growth. Then I describe various approaches (mechanical and chemical) to slow hair loss by increasing blood flow to hair stem cells, including minoxidil, tadalafil, PRP, microneedling, Botox and ketoconazole treatments. I also discuss how age-related hormone changes cause hair loss and explain the effectiveness of treatments such as caffeine, saw palmetto, growth hormone, finasteride and dutasteride. For all hair growth options, I describe potential side effects, how soon to expect results and the amount of hair regrowth to expect and I highlight effective combination treatments for hair regrowth even in hair “dead” (bald) zones. For many listeners, thinning, brittle hair, or pattern baldness are a source of anxiety and stress. This episode explains the mechanisms underlying hair regrowth tools and the science behind them so that you can evaluate potential treatments and associated side-effect profiles and select the best one(s) for you.

For the full show notes, visit hubermanlab.com.