Evidence check: Magnesium in the context of fatigue

The evidence for magnesium in the context of fatigue is mixed. The provided context does not contain specific studies on this topic. General scientific literature indicates that magnesium deficiency can contribute to fatigue, and supplementation may help in deficient individuals. However, for those with adequate magnesium status, benefits are minimal. Many consumer products market magnesium for fatigue, but the evidence is not strong. Serum magnesium is a poor marker of total body stores, and high doses can cause gastrointestinal side effects. Overall, the evidence is rated as 'mixed' – some human studies show modest effects, but results are inconsistent and often exaggerated by marketing.