This podcast episode delves into the intricate connections between skin health, sun exposure, and systemic health, emphasizing the critical role of the skin as a barrier organ reflecting overall wellness. Andrew Huberman discusses various scientific insights — from the potential risks of excessive sun exposure and the importance of regular skin checks for cancer prevention, to the benefits of specific nutrients, supplements, and modern treatments like peptides and phototherapy for maintaining youthful skin. The episode highlights the balance needed in sun protection while also recognizing sunlight's role in health, underscoring that an informed approach to skincare can significantly enhance skin health and longevity.