*Muscle cramps and spasms can be caused by a large variety of factors. Magnesium deficiency is only one of these possible factors.
(4) Dietary Magnesium Intake in a National Sample of US Adults. The American Academy of Nutritional Sciences.
(5). Randomized, Crossover, Placebo Controlled Trial of Magnesium for Chronic Persistent Leg Cramps.
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(9) Interventions for leg cramps.
(10). Case Study: Muscle Cramps Cured with Magnesium