Research has shown that vitamin D is important to the immune system, muscle function, heart health, brain development and mood. Our best source of this vitamin is the sun or “sunshine vitamin”. As skin cancer and UV exposure concerns rise, our time in the sun making vitamin D decreases. Skin must be exposed to the sun without protection to achieve sufficient levels. Unfortunately, there are very few food sources of vitamin D. The foods that do contain the sunshine vitamin usually have small amounts. Since vitamin D deficiencies are so common, it’s important to understand the signs and symptoms. Below I have listed some of the common symptoms of vitamin…