Vitamin D

Vitamin D is having its moment in the sun. Lauded for boosting immunity; helping to cut the risk of breast, ovarian, and colon cancers; and keeping you happy, this nutrient is the new health star. Experts say we need 1,000 to 2,000 IU daily. Sun exposure is the best way to get it, but in the winter bone up by drinking vitamin D-fortified milk and eating salmon. You may need a supplement, too; talk to your doc.