A new small study that’s about vitamin D supplements is spurring a lot of discussion in health circles.
In this Australian study, researchers divided a group of 325 south Asian and Caucasian women into 3 groups: one got vitamin D supplements in the form of vitamin D 3, one group got vitamin D 2 supplements, one got only placebo.
And the group that got vitamin D 3 ended with significantly higher blood levels of vitamin D than the other groups (the placebo group’s blood levels of vitamin D actually dropped).
So, according to this study you get the best benefit from vitamin D if you take it in the form of D 3, which coincidentally, is the form you get vitamin D from non-vegan food such as fish and eggs.
All this just adds to the many unknowns (controversies?) that still surround vitamin D supplements.
Most important, we have still not firmly established (not even weakly established in most cases) if extra vitamin D in the form of supplements prevents so many of the conditions – not even osteoporosis – for which is is so heavily promoted.
We don’t know if there are individual differences among us (genetic, sexual, socio-economic, etc) that play an important role in how much vitamin D we need or can absorb, which may make a huge difference in how well supplements might work in us.
We don’t know nearly as much as we need to know about “best” vitamin D blood levels, nor best dosage of vitamin D supplements to take, and as this study points out, we don’t even know what form of supplement may be best.
So, if you are going to take vitamin D supplements, as so many of you undoubtedly will (“Hey, why not, eh, cuz what’s the harm?”), the one piece of advice I’d really push is that you don’t go overboard.
There are so many people telling us now that there is no upper limit to how much vitamin D you can take in the form of supplements, and the more the better, which is just plain nonsense because there are very few things in life (close to nothing, I’d argue) where more is invariably better than “some”.