Study suggests many people in the U.S. are taking too much vitamin D
By Sally Robertson, BScJune 21, 2017
An increasing number of adults in the U.S. are taking too much vitamin D, say researchers, with 3% supplementing at doses that have previously been associated with an increased risk of serious side effects such as kidney stones, certain cancers and even death.
In the body, vitamin D aids calcium absorption and helps maintain healthy calcium and phosphate levels in the blood. However, an excess of the vitamin can cause too much calcium to be absorbed, which can damage soft tissues such as the kidneys and heart and cause vascular calcification.
Matthew Drake (Mayo Clinic, Rochester, Minnesota), who was not involved in the study, advises that younger or otherwise healthy people who get enough sun are generally less likely to be vitamin D deficient. For those who do want to supplement, he says “1,000 to 2000 IU (international units) of vitamin D daily is a very safe level of supplementation which will keep the vast majority of people in an optimal range.”.
http://www.news-medical.net/news/20170621/Study-suggests-many-people-in-the-US-are-taking-too-much-vitamin-D.aspx
