As noted above, hexavalent chromium is known to cause cancer and skin irritation. There have been no convincing reports of toxicity from the trivalent chromium in food or supplements. Therefore, the Food and Nutrition Board has not set an upper level for chromium. Several studies have shown a lack of side effects from supplementation of 1000 mcg for several months. People with kidney or liver disease should be cautioned to take lower doses. Normal supplementation levels are between 60 mcg and 120 mcg of hromium.Chromium is a valuable trace mineral because it boosts the power of insulin.
Table 13-5 Adequate intakes for chromium for all ages.
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