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🗓️ 15 December 2025
⏱️ 197 minutes
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| 0:00.0 | What's the deal? Can people reverse the graying of their hair by reducing their stress? Can people accelerate the graying of their hair by stressing more? |
| 0:07.8 | Likely, both are true, yes. Okay. And I think what we discovered is that hair graying, at least temporarily, is reversible. This was surprising because it goes against this notion that aging is a linear, you know, process that just |
| 0:23.2 | happens over time no matter what you do. And here we should know, actually, a hallmark of aging, |
| 0:28.2 | which is, you know, depigmentation, losing color in your beard and your hair. It's something |
| 0:33.5 | that happens to almost everyone, but at different stages of life and so on. |
| 0:38.5 | And then on the same person, and the reason we got into this was that this felt like the perfect |
| 0:42.9 | experiment. |
| 0:43.7 | Every hair has the same genome. |
| 0:45.8 | They're all genetically identical twins, right? |
| 0:48.2 | And they're all exposed to the same exercise regime, the same food, the same stress levels. |
| 0:53.7 | Yet some hairs go gray when you're like late 30 stress levels, yet some hairs go gray when |
| 0:55.8 | you're like late 30s and then some hairs go gray when you're like in your 80s. |
| 0:59.7 | What the hell's happening? If we could figure this out, maybe we can understand why different |
| 1:04.1 | people age at different rates. Because it's very clear that there's no more than 10% |
| 1:09.0 | of how long you live that's genetically driven. |
| 1:11.6 | Like the best studies put this at around 7%. |
| 1:13.8 | 7% of longevity is genetically inherited maybe, and then about 90% is not. |
| 1:20.1 | Welcome to the Huberman Lab podcast, where we discuss science and science-based tools for everyday life. |
| 1:28.8 | I'm Andrew Huberman, and I'm a professor of neurobiology and ophthalmology at Stanford School of Medicine. |
| 1:35.5 | My guest today is Dr. Martin Picard. |
| 1:38.0 | Dr. Martin Picard is a professor of behavioral medicine at Columbia University. |
| 1:42.8 | He is also a leading expert on how your daily behaviors and your mode of thinking, |
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