Getting enough vitamin D is essential for bone health and immunity. Learn the best sources of the “sunshine vitamin,” including the right foods, safe sun exposure, and how to choose the right ...

Green powders can help fill nutritional gaps while providing some health benefits, but there are caveats to consider when purchasing and adding them to your diet.

A 3-ounce serving of tuna offers up to 4.84 mcg (193 IU) of vitamin D, but several foods contain even higher amounts.