We know that vitamin D can help protect you against heart attack, diabetes, and other ailments. A new study shows that vitamin D can reduce your risks of the common cold and flu, reports U.S. News & World Report.

Your body produces vitamin D from sunlight, but since excessive exposure can cause skin cancer, our medical experts recommend getting it mainly from your diet. Aim for 800 to 1,000 international units (IU) daily. If you don't get enough from food, consider taking a supplement.

Read more on foods high in vitamin D, see our full report on how vitamin D can help you live longer, and take a look at our Natural Medicine Ratings (subscribers only) on vitamin D.