Nighttime leg cramps are common, and they become more frequent with age. They aren’t usually dangerous, but certain people are more prone to them.
Who is most at risk?
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Older adults: Muscle loss and changes in tendons and nerves with aging can increase the likelihood of cramps.
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People who exercise heavily or stand for long periods: Muscle fatigue and overuse can trigger cramps.
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People who are dehydrated: Fluid loss from sweating, vomiting, or diarrhea can contribute.
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Pregnant people: Especially later in pregnancy.
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People with certain medical conditions: Diabetes, peripheral artery disease, kidney disease, thyroid problems, and some neurological disorders can be associated with leg cramps.
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People taking certain medications: Some diuretics, statins, and other medicines can occasionally contribute to muscle cramps.
What can help?
Gentle calf and hamstring stretching before bed, regular physical activity, adequate hydration, and avoiding prolonged inactivity may reduce episodes.
Don’t automatically start magnesium or other supplements just because you have cramps. Magnesium deficiency isn’t the usual cause of ordinary nighttime leg cramps, and supplements can interact with medications or be inappropriate with kidney problems.
When to get checked
Talk with a healthcare professional if cramps are frequent, severe, new, or disrupting sleep, or if they’re accompanied by muscle weakness, swelling, numbness, or persistent pain.
Urgent evaluation is appropriate for a suddenly swollen, warm, painful leg—especially if accompanied by chest pain or shortness of breath.
