i'm not going to start popping pills until i weight the risks. relax.
most of the studies i've seen suggest that b3 is protective against type I. and, this chinese research team placed the curious claim that we live in a world of over-nutrition in it's abstract. i've been told repeatedly that the food we eat sucks, and that we don't get enough vitamins. but, maybe the politburo rejects this.
i'm going to take this one skeptically. but, it's there.
https://www.sciencedaily.com/releases/2009/12/091222105449.htm