Magnesium is most commonly discussed as supportive for muscle cramps, twitching, and in some people, tension-type headache patterns. But “pain” is broad, and magnesium is not a universal fix. Low back pain, for example, may relate to posture, discs, musculoskeletal imbalances, or inflammation. If magnesium deficiency contributes to muscle tightness or easier cramping, correcting it may improve that component. Magnesium is also frequently mentioned in migraine discussions, but responses vary and should align with a clinician’s plan. The best approach is to clarify the pain type (muscle, nerve, joint), assess accompanying signs, and use magnesium as a targeted support when appropriate rather than a one-size-fits-all solution.