“Magnesium is a powerful fix for stress and muscle cramps.”
Limited confidence because anxiety studies are small and weak, while better cramp trials mainly involve older adults. Those trials do not show a useful general cramp benefit; other groups are less studied.
The promise goes too far. Magnesium has not shown useful benefits for typical rest cramps in older adults, and evidence for stress or anxiety relief is weak. Correcting a deficiency is a different question.
Safety note: Supplemental magnesium can cause diarrhea, and people with significant kidney disease can build up too much magnesium.
Talk to a healthcare professional if: If you have kidney disease or take medicines that interact with magnesium, ask a clinician before regular high-dose use.
Treat magnesium as a nutrient you need, not a general remedy for stress or cramps. Supplements are not risk-free.
Eat more magnesium-rich foods (greens, nuts, seeds, beans); supplement only to fill a likely gap.