Can Low Vitamin D Cause Muscle Pain?

Yes, low vitamin D levels can cause muscle pain, weakness, and aching. Vitamin D deficiency affects approximately 1 billion people worldwide and is linked to musculoskeletal symptoms in 70-80% of cases. When vitamin D levels drop below 20 ng/mL (50 nmol/L), muscles may not function properly because vitamin D is essential for calcium absorption and muscle contraction. Common symptoms include deep bone pain, muscle cramps, and general weakness, particularly in the back, hips, and legs. Studies show that vitamin D supplementation can reduce muscle pain by 40-60% within 6-12 weeks when deficiency is corrected. Blood testing can confirm vitamin D status, and most adults need 1,000-4,000 IU daily to maintain optimal levels.

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