Vitamins are organic chemicals that a given living organism requires in trace quantities for good health, but which the organism cannot synthesize, and therefore must obtain from its diet. The term vitamin does not encompass other essential nutrients such as dietary minerals, essential fatty acids or essential amino acids. Nor is it used for the large number of other nutrients that are merely health-furthering, but not strictly essential. Humans require 13 different vitamins.

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Retinol (Vitamin A) Vitamins are nutrients required for essential meta ...
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Vitamins Support

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Vitamins: Help or Hindrance to Good Health?
... We ask questions when a physician prescribes a medication: Why do we need it? What is it good for? What are the side effects? Yet, many of us never ask those basic questions about vitamin/mineral supp...
Source: Cleveland Clinic

Vitamins Other

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Are You Over-Supplementing?
... Is every juice carton in your refrigerator labeled “calcium-fortified?” How about the cereals in your cupboard? Are vitamin bottles stacked up like pyramids in your medicine cabinet? We all do it. In ...
Source: Cleveland Clinic

Should Everyone Over Age 75 Take a Multivitamin?
... From the Cleveland Clinic Journal of Medicine Cindy Moore, MS, RD, LD, FADA, Director, Nutrition Therapy, Cleveland Clinic Should everyone over age 75 take a multivitamin? Age should not be the sole c...
Source: Cleveland Clinic