Study Reveals Vitamin D More Effective than Flu Vaccine Japanese scientists, writing in the American Journal of Clinical Nutrition, have found that the dietary supplement Vitamin D is better at preventing flu than vaccinations.
Vitamin D Standards Too Low A worldwide increase to 2,000 IU of vitamin D daily (or higher for some groups) could reduce the incidence of a number of diseases, including multiple sclerosis, cancer, type-1 diabetes, metabolic syndrome, cardiovascular disease and tuberculosis.