I have written a number of articles about vitamin D and health. I have some concerns that for the most part have probably not been considered, but then I am not one that works off of linear thinking models.There are a variety of opinions on vitamin D, including one that is fairly negative. However, in good science, the best outcomes are achieved if we are open minded enough to look at all possible vectors.I agree that vitamin D is an important nutrient. I agree that it appears clear that we are experiencing a problem with low levels of vitamin D in most people.People of color require more. People who do not go out in the sun need more. And people who exclude healthy fats from their diet, such as the philosophy of no fat promulgated on the public over the past several decades, really do need...