Millions of Americans take multivitamin/mineral pills each day, but there's been remarkably little solid evidence to back up their purported benefits. Some recent research offers interesting insights into multis and wellbeing.
Few foods naturally contain significant amounts of vitamin D, including oily fish, egg yolks, and some mushrooms. But many foods are fortified with the vitamin, notably milk and breakfast cereals. Here's a handy chart to guide you.