Vitamin C RDA should be doubled to reduce risk of stroke, cancer, heart disease
The recommended dietary allowance, or RDA, of vitamin C is less than half what it should be, scientists argue in a recent report, because medical experts insist on evaluating this natural, but critical nutrient in the same way they do pharmaceutical drugs and reach faulty conclusions as a result.
This is far from the only example of RDAs being set lower than the available scientific literature supports. The RDA for vitamin D is currently 600 IUs for those 1-70 years of age, however, there is substantial scientific research which indicates that an intake of up to 5000 IUs a day is more appropriate for most people.
The researchers, in Critical Reviews in Food Science and Nutrition, say there’s compelling evidence that the RDA of vitamin C should be raised to 200 milligrams per day for adults, up from its current levels in the United States of 75 milligrams for women and 90 for men.
Rather than just prevent the vitamin C deficiency disease of scurvy, they say, it’s appropriate to seek optimum levels that will saturate cells and tissues, pose no risk, and may have significant effects on public health at almost no expense – about a penny a day if taken as a dietary supplement.
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