Evidence-backed FAQ
What does magnesium do in the body?
Direct answer
Magnesium is an essential dietary mineral that acts as a cofactor in more than 300 enzyme systems involved in processes such as energy production, protein synthesis, and normal muscle and nerve function.[1]
What the evidence shows
This is a bounded physiological definition from the approved evidence record; it does not establish that magnesium supplementation improves every process in people who already have adequate intake.[1]
Important limitations
An essential biological role is not the same as evidence that additional supplementation produces a clinical benefit for every person or condition.[1]
Related questions
- Is magnesium an essential mineral?
- Does an essential role prove a supplement benefit?
Read the full evidence summary
This FAQ is the concise answer. The linked research page provides the full study context, populations, doses, outcomes, and limitations.
References
- Magnesium - Health Professional Fact Sheet. NIH Office of Dietary Supplements. Retrieved 2026-06-18. Government health fact sheet View source →