We are learning more and more about the health risks of low Vitamin D. Anemia is another risk, and varies by race. Evaluation is best method to determine supplementation requirements, if any. A simple way to support vitamin D levels as well as supplement essential fatty acids and Vitamin A is by taking a teaspoon of cod liver oil daily. You may require a higher dose of cod liver oil–your doctor can advise you about that. Read more here.
