Vitamins and supplements like melatonin and fish oil offer health benefits but can cause side effects if misused. Learn about the impact of saw palmetto on blood pressure and find the best multivitamins for young women and adults over 50.
Vitamin B12, part of the vitamin B family, is mainly responsible for red blood cell formation and healthy neurological function. Primary causes of a vitamin B12 deficiency are intestinal disorders, which can result in the vitamin not being absorbed, or extreme or continual mental stress.
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Damage to the sensory, motor or autonomic nerves can cause pain, stinging, swelling, burning, loss of sensation and hypersensitivity, among other things, and occurs when there is “damage to one or more of the myriad nerves outside the brain and spinal cord,” according to "The New York Times."
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