Study Of Asthma Patients Finds No Benefit In Vitamin D Supplementation

Researchers have long wondered whether vitamin D deficiency led to other health problems for asthma sufferers. New U.S. research has determined that vitamin D supplementation does not reduce the severity or frequency of cold symptoms in patients with “mild-to-moderate asthma” any better than a placebo. The study involved 408 patients with insufficient or deficient levels of plasma vitamin D divided randomly into two groups, one of which received an initial 100,000 IU dose of vitamin D3, followed by 28 days of a 4,000 IU daily dose.