So what about studies that have linked low vitamin D levels to heart disease and cancer? Lead researcher Mark Bolland explains that they don’t prove a cause-and-effect relationship, telling USA Today that people with low levels of vitamin D “tend to be older, heavier, tend to exercise less and spend less time outside,” which might explain both their poor health and their low levels (due to lack of sun exposure).
Do you take vitamin D supplements, or do you rely on sun exposure and food sources to get your daily dose?
Michael Holick, a professor of medicine at Boston University and a proponent of vitamin D, dismissed the review, explaining that vitamin D doses were too low in previous studies. He says it’s possibly higher doses — 2,000 IU a day — might be needed to produce benefits, much higher than the 200-400 IU used in the studies, and higher than the 600-800 IU currently recommended by the institute of medicine.
Diana Vilibert February 26, 2014 Care 2 Green Living 26/02/2014