Having too much vitamin D can increase the risk of adverse events such as fractures, falls, and the formation of kidney stones, physicians reported on Friday at the American Academy of Dermatology annual meeting in San Diego.

Health concerns associated with having vitamin D insufficiency or deficiency have captured many headlines in popular media and some medical circles, said Martin A. Weinstock, M.D., Ph.D., a specialist in dermatoepidemiology at Brown University.

“However, there’s been much less attention devoted to possible harms resulting from too much vitamin D. That’s an issue because people are taking all sorts of vitamin D supplements, which for the most part is fine, but they can overdo it,” he said.