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These things can lead to serious deficiencies in some essential vitamins and minerals you need to stay healthy, including iron, calcium, vitamin B12, folic acid, and vitamin D.
Vitamin C deficiency generally decreases immune function and increases ... is vital to help ensure you get enough vitamin C. The table below lists the average recommended dietary allowances (RDAs) of ...
U.S. diets should include more of vitamins D and E, fiber, calcium and magnesium — all are essential nutrients that could offer health benefits.