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So I read a couple of weeks ago(sorry, can't remember where) that a study was underway looking at the effects of high dose D3(6000+iu's daily) on pregnant women but it was halted due to 'ethical reasons.' Does anyone know what the reasons were? Was it possible complications with the fetuses?
I haven't seen that one, but there is one negative vitamin D study I read about.
In old people given 100,000 units of Vitamin D before the winter season, there was an INCREASE in bone fractures in this group. It was a very counter-intuitive result.
There is one thing to watch out for when supplementing with Vitamin D, other than Vitamin D toxicity, that is too much calcium. In people that get a lot of calcium, lots of Vitamin D can lead to too much calcium in the blood.