Key Concepts

  • AI – 35 mcg/day (men); 25 mcg/day (women)
  • UL – not established
  • Potential for toxicity through supplementation
  • Food Sources – Broccoli, whole grains, legumes, nuts, meat

Adequate Intake (AI)

The AI for chromium is 35 mcg/day for men and 25 mcg/day for women.

Functions

Chromium has been proposed to be the cofactor for chromodulin. Chromodulin may increase insulin receptor activity. This is important in proper blood sugar regulation.

Deficiency

A chromium deficiency can impair glucose metabolism.

Toxicity/Excess/Upper Intake Level (UL)

The UL for chromium is not established. Although no UL has been established it should not be assumed that excessive intake of chromium is safe. Chromium is a heavy metal. Excessive chromium intakes have potential teratogenic, genotoxic, and carcinogenic effects. Supplemental doses of 1,000mcg/d for more than 6 weeks have resulted in kidney failure in some individuals.

Food Sources

  • Broccoli – 1/2 cup – 11 mcg
  • Green beans – 1/2 cup – 1.1 mcg
  • Potatoes (mashed) – 1 cup – 2.7 mcg
  • Waffle -1 (about 2.5 oz) – 6.7 mcg
  • Beef – 3 oz – 2.0 mcg
  • Grape juice – 8 fl oz – 7.5 mcg

References/Resources

  1. http://lpi.oregonstate.edu/mic/minerals/chromium#function
  2. Vincent, J.B. Quest for the molecular mechanism of chromium action and its relationship to diabetes. Nutr Rev. 2000; 58: 67-72.

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