I appreciate the response but I completely disagree (I wrote a larger post elsewhere). The amount of people who OD on medication and die or otherwise is significantly higher than any of those on Vitamins, let alone Vitamin D3. When an average of 50% of the population (study linked in other post), and a very small fraction of a % of those will every run into problems (which they can address through going to a physician if they have problems), I _do_ consider it a "very little downside".

I'm happy to look at data that says otherwise, but from my research I haven't found any.