vitamin d is not given for weight loss but it is common for people with excess weight to have low vitamin d levels. a doctor may prescribe very high levels to bring levels back up. it is not recommended for someone to give themselves more than the tolerable upper limit of vitamin d (4 000iu) unless prescribed by a doctor. although toxicity is rare it can occur causing increased calcium levels in the blood. for more on vitamin d supplementation see this article.
i read an artical that said you can take more than 10 000iu of vitamin d3 for weight lose. is that true? health risks?