Vitamin D Insufficiency High Among Patients With Early Parkinson Disease

Patients with a recent onset of Parkinson disease have a high prevalence of vitamin D insufficiency, but vitamin D concentrations do not appear to decline during the progression of the disease, according to a report in the March issue of Archives of Neurology, one of the JAMA/Archives journals. Vitamin D is now considered a hormone that regulates a number of physiological processes…