You guys and your Vitamin D. You ask me on HCT Live, you ask me on comments, you ask me on Twitter. I'm amazed at the persistence of this question, as study after study seems to show that Vitamin D isn't doing most of us much good at all. I finally got all my thoughts together on a recent post over at JAMA. But let's do it here, too. This is Healthcare Triage News. This was adapted from a column I wrote for the JAMA Forum. Links to references and further reading can be found there: http://newsatjama.jama.com/2016/03/24/jama-forum-why-take-vitamin-d-supplements-if-they-dont-improve-health/ John Green -- Executive Producer Stan Muller -- Director, Producer Aaron Carroll -- Writer Mark Olsen -- Graphics http://www.twitter.com/aaronecarroll http://www.twitter.com/crashcoursestan http://www.twitter.com/johngreen http://www.twitter.com/olsenvideo And the housekeeping: 1) You can support Healthcare Triage on Patreon: http://vid.io/xqXr Every little bit helps make the show better! 2) Check out our Facebook page: http://goo.gl/LnOq5z 3) We still have merchandise available at http://www.hctmerch.com