I was a little disappointed he failed to mention that comparing between the average vitamin D level of < 25 in Americans to somewhere in the 40-60 range, you get a 70% benefit in avoiding pulmonary infections. D modulates the immune response responsible for ARDS, along with a whole slew of other good things. It actually interacts with every cell in the body, because they all have Vitamin D receptors. It interacts with over 2000 different genes!

Everything he had to say was true, but there's a lot more information out there. The MedCram videos on YouTube are very detailed, and yet start from a pretty basic understanding of Biology. Dr. John Campbell videos on YouTube are very informative at a basic level for non-medical people. But I have to admit, this guy was pretty funny. No F-bombs or stories about pimps on the other videos.