Vitamin D overconsumption leaves man with permanent kidney damage

A medical mystery involving a Canadian man was solved when doctors realized he had been taking excessive amounts of vitamin D for more than two years. The man’s experiences are detailed in a new case study that was published Monday in the Canadian Medical Association Journal. According to the case study, the man’s doctor sent him to a kidney specialist after discovering that the 54-year-old was producing nearly four times the normal level of creatinine, a waste product often measured