Vitamin D plays an important role in the body, helping maintain proper levels of calcium and phosphorus and helping support bone health. A lack of sufficient vitamin D may lead to health issues. This video will examine common symptoms of vitamin D deficiency and discuss some of the best food sources of vitamin D to help improve your vitamin D status. Common symptoms of low vitamin D include fatigue, bone pain, depression, and muscle weakness. Good food sources of vitamin D include fatty fish like salmon, tuna, and mackerel as well as egg yolks, beef liver, and mushrooms. Vitamin D supplements may also be recommended by your healthcare provider to treat deficiency.