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The treatment is inexpensive and effective

Introduction Vitamin B12 deficiency can cause fatigue, nerve pain, tingling, and, if left untreated, permanent nerve damage

others promote blood vessel growth or collagen synthesis

Long-term lack of sleep is thought to cause persistent low-grade inflammation and immunodeficiency, weakening the bodys ability to fight infections and maintain overall health

doi: 10.1016/j.crvi.2005.10.008
