Factors That Might Affect Your Vitamin D Levels
You already know vitamin D is important for bone health, but its benefits don't stop there. Perhaps the most vital are regulating the absorption of calcium and phosphorus, and facilitating normal immune system function. Getting a sufficient amount of vitamin D is important for normal growth and development of bones and teeth, as well as improved resistance against certain diseases . Your vitamin D levels reflect many factors. For example: Where you live If you live in the northern states (latitudes north of 37°), you are at higher risk for a vitamin D deficiency because your skin may not be able to produce any vitamin D from sun exposure during the winter months. Your age Your skin's ability to produce vitamin D drops with age. If you're over age 65, you generate only one-fourth as much vitamin D as you did in your 20s. Your skin color People with da...