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Chromium: A Decade as a Nonessential Trace Element
1Department of Chemistry and Biochemistry, The University of Alabama, Tuscaloosa, AL.
The Journal of Nutrition
|July 27, 2026
Summary
Supplemental chromium (Cr) may not offer benefits despite research into its molecular mechanisms. Current data do not consistently support proposed models for Cr action, questioning its utility even at high doses.
Area of Science:
- Nutritional Science
- Biochemistry
- Human Physiology
Background:
- Chromium (Cr) is not an essential trace element.
- Research focuses on potential benefits of pharmacologic doses of supplemental Cr.
- Understanding Cr's molecular mechanisms is ongoing.
Purpose of the Study:
- To review the established mechanisms of chromium transport and action.
- To evaluate proposed molecular models for chromium's effects.
- To assess the utility of chromium supplementation.
Main Methods:
- Review of existing literature on chromium transport and proposed mechanisms of action.
- Analysis of data related to two primary models: AMPK signaling alteration and insulin signaling pathway activation.
Main Results:
- Mechanisms of chromium absorption, transport, and urinary loss are largely understood.
- Two primary models for chromium action (AMPK and insulin signaling) have been proposed.
- Existing data do not consistently support either proposed model for chromium action.
Conclusions:
- The precise molecular mechanisms of chromium action remain unclear.
- Current evidence raises questions about the potential benefits of chromium supplementation, even at pharmacologic doses.
- Further research is needed to clarify chromium's role and utility in human health.
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