Do you know what is most fascinating about tanning? Our skin is literally changing its biology because it has been exposed to ultraviolet radiation, and somehow we decided that this is a beauty treatment. So, if tanning is the problem, what about sunscreen? Sunscreen has somehow become one of the most misunderstood products in medicine. There are people online claiming sunscreen is toxic, unnecessary, causes cancer, interferes with vitamin D, or is basically a chemical conspiracy between Big Lotion and the dermatology industrial complex. And then there are people who seem to think sunscreen is magical armor that allows you to lie on a beach for eight consecutive hours without consequences. Neither approach is particularly useful. Related HCT episodes: Sunscreen and Safety: https://youtu.be/X0mHNbvLCn0 Be sure to check out our podcast! https://www.youtube.com/playlist?list=PLkfBg8ML-gInFaYyYhKLBp2u7h5IojTw4 Other Healthcare Triage Links: 1. Support the channel on Patreon: http://vid.io/xqXr 2. Check out our Facebook page: http://goo.gl/LnOq5z 3. We still have merchandise available at http://www.hctmerch.com 4. Aaron's book "The Bad Food Bible: How and Why to Eat Sinfully" is available wherever books are sold, such as Amazon: http://amzn.to/2hGvhKw Credits: Aaron Carroll -- Writer Tiffany Doherty -- Writer and Script Editor John Green -- Executive Producer Stan Muller -- Director, Producer Mark Olsen – Art Director, Producer