Vitamin D Study Latest To Cast Doubt On Supplements' Ability To Prevent Disease

A vitamin a day keeps the doctor away? Not quite. More and more scientific research is showing that the health benefits of vitamins might be less spectacular than advertised. But Americans still keep swallowing the message - to the tune of around $11 billion a year, according to the Nutrition Business Journal. But while vitamins may be beneficial in very specific circumstances, many consumers may be counting on a silver bullet that's a dud at best.