Vitamin C remains one of the most frequent supplements Americans consume with the thought that it prevents the common cold and cancer while preserving everyday health. Fortunately out diets generally provide sufficient amounts of this water soluble vitamin with any excess from either diet of supplement being degraded in the intestinal tract without absorption.
Sources of vitamin c principally include fruits and vegetables such as bell peppers, oranges, broccoli, Brussels sprouts and strawberries. Meat products lack substantial quantities of vitamin c.
True deficiency of vitamin c results in scurvy - a condition rarely observed in the developed world except in alcoholics, the poor or elderly unable to afford fruits and vegetables and those following peculiar dietary fads.
The concept promoted by Dr. Linus Pauling that vitamin c in high doses could prevent or cure the common cold and reduce the incidence of cancer failed to withstand scientific scrutiny. For an average individual consuming more than 90 mg of vitamin c, a level easily obtainable by diet alone, supplements fail to offer demonstrable benefit.
Негізгі бет Vitamin C
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