|MadSci Network: Anatomy|
Hi Paul. A lack of water can cause muscle cramps. Dehydration may be due to excessive perspiration, vomiting, diarrhea, or even diruetic medication or just not drinking enough water. I couldn't find a web site that explained in detail why this happens. The Mayo Clinic suggests drinking 6 to 8 cups of water daily to prevent leg cramps because fluid helps your muscles relax and contract. http:// www.mayohealth.org/mayo/9502/htm/tips_2-5.htm Other causes of muscle cramps are on this web site: http://netwellness.org/mhc/scr/003193sc.htm#Common causes: Generally though, when a muscle contracts, the concentration of electrolytes such as potassium and sodium ions changes in your muscle. A change in the amount of water in your body might cause the concentration of your electrolytes to be out of balance which could cause muscle cramping. Hope this helps. Bonnie.
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