What should a good multi-vitamin/mineral supplement contain?
Compare the supplement label with periodically updated nutrient Daily Values. Vitamins E and K, the ultratrace elements, and bulky ingredientscalcium, magnesium, and potassiumare often supplied in inappropriate amounts. Vitamin A, phosphorus, and iodine are overabundant in the U.S. diet. Extra iron and possibly copper may be potentially hazardous for those who already consume them from foods. Supplements can contain vitamin A as retinol or beta carotene. Beta carotene has a very low toxicity potential and is a better antioxidant. Those with diabetes or hypothyroidism, however, may not adequately convert beta carotene into vitamin A, requiring an MVM with some retinol (e.g., 2,000 international units [IU] a day). Vitamin D deficiency may increase the risk of diabetes, hypertension, autoimmune diseases, certain cancers, and muscle and joint pain. From infancy, 200 IU a day is recommended, rising to 400 IU a day after age 50 and to 600 IU a day after age 70. Individuals with increased ris
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