Why Do Muscles Cramp and Spasm?

Filed Under: Muscle Cramps and Spasms, Bone & Joint Health
Last Reviewed 02/06/2014

Learn why calcium levels are vital for preventing cramps and spasms

While there is no single definitive cause of muscle cramps and spasms, I would estimate that a calcium deficiency is to blame 90 percent of the time. The remaining 10 percent can stem from a circulation problem or the body’s inability to use calcium.

Calcium is needed by every muscle fiber. Once a muscle fiber contracts or shortens, it must have calcium to relax. Any muscle in the body may react to improper calcium levels. That's why I say calcium is the vital link in muscle relaxation.

More Dr. Williams Advice on Muscle Cramps and Spasms

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