Vitamins and minerals are essential nutrients for body functions. In theory, we can get all of these from our diets, but given the quality of most modern food, and the conditions of modern life, we often require a boost of specific supplements like magnesium, iron or vitamin C. Deficiencies may be due to poor farming practices or incorrect dietry intake and supplemention may be necessary for a short or long time to restore balance. If you are unsure of what specific nutrients might be missing from your diet contact your health care professional for a detailed health review. Other common deficiencies include vitamin D, B12 and B6, chromium, selenium and zinc.