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Most of the time, no apparent cause for night leg cramps can be identified. In general, night leg cramps are likely to be related to muscle fatigue and nerve problems. The risk of having night leg cramps increases with age. Pregnant women also have a higher likelihood of having night leg cramps. Several conditions, such as kidney failure and diabetic nerve damage, are known to cause night leg cramps. But if you have one of these, you're most likely aware of it and have symptoms other than night leg cramps.
A calcium or magnesium deficiency is a common cause of muscle spasms, particularly spasms of the legs and feet. According to Acu-Cell.com, muscle spasms of the left leg are indicative of a calcium depletion, whereas muscle spasms of the right leg are indicative of a magnesium depletion.hey can occur after exercise or during the night and are commonly caused by overuse of a muscle, dehydration or vitamin and mineral deficiencies. If your muscle cramps are caused by a lack of certain vitamins and minerals then dietary supplements may be helpful to you.