Ernst wrote:I have red lots of research about vitamin-d deficiency with pregnancy or fetus.. but could you put some links about resarch(s) about large doses vitamin-d and fetus malformations? This is interesting, I mean how big doses have been proven bad for developing fetus.
ps. tried to find scientific research about vitamin d overdose and fetus abnormalities, but couln't find.
What I have read states that there were some people who took up to 1,000,000 IU a say, and became anorexic (plus a few other troubles - like extremely constipated). I don't have the link (I read so very much).
As to foetal malformation; I tried to get my wife to take the RDA of Vit. D3 whem she was pregnant, but she would not. I give my 3 year old 2,000 -4,000 IU a day. He has only ever had one "flu", and had a sick tummy for the first time in his life the other day. He gets acidophilus/bifidus every day, fish oil every day, the Vit. D, and is vegetarian (his choice). He is the picture of robust health, and is very sharp-minded. He has never been vaccinated either (a whole new topic for discussion...)
For what it is worth; some 10 years ago, I realized that I felt much better in the summer that the winter, and further recognized that when I quit milk (fortified with Vitamin D), I got even worse. I started taking 15,000 IU a day, and have had no problems. About 5 years ago, the studies on the benefit of Vit. D came to light. I thought - 'pshaw! No kidding!.
A point on Vit. D; it is important that one takes D3 - as opposed to plain old D. Just as in Vit. E, it is important to get the Gamma forms over the Alpha form. There are actually 8 types of Vit. E, but the most common form sold is Alpha-tocopheral, which actually inhibits the Delta and Gamma forms. It is like the difference between glutathione and reduced
glutathione, and, ...I forget... Oh, yes Vitamin B12... there are different types of that too. I think that there are different forms of most vitamins - some naturally sourced, some synthetic, etc.
Also, remember that the RDA (Recommended Daily Allowance) is the minimum
requirement to avoid pathology.