Merck Manual

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Chromium Excess

By

Larry E. Johnson

, MD, PhD, University of Arkansas for Medical Sciences

Medically Reviewed Dec 2021 | Modified Sep 2022
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Chromium excess occurs when the body has too much of the mineral chromium.

Chromium enables insulin (which controls blood sugar levels) to function and helps in the processing (metabolism) and storage of carbohydrates, protein, and fat.

Chromium supplements do not enhance muscle size or strength.

Small amounts of chromium taken by mouth are not harmful (nontoxic). In the workplace, people may be exposed to a different, harmful (toxic) form of chromium. This form results from industrial pollution. This form may irritate the skin, cartilage of the nose, lungs, and digestive tract and may cause lung cancer.

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NOTE: This is the Consumer Version. DOCTORS: VIEW PROFESSIONAL VERSION
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