The inability to absorb vitamin B12 fatigue glossitis, which causes changes in the size, color, and texture of the tongue shortness of breath a loss of appetite and weight loss cognitive decline imbalance numbness heart palpitations diarrhea depression mood changes Pernicious anemia is an autoimmune disorder Researchers do not know the exact causes of the disorder
According to the Mayo Clinic, most people consume adequate amounts of B vitamins through their diet, though the elderly, particularly those with pernicious anemia, athletes, strict vegetarians, and people who consume a lot of alcohol may be deficient in the B vitamins and may require injections or oral supplementation of B vitamins or vitamin B-12, in particular
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Vitamin B12 is also a key player in energy metabolism and, thus, popularly recommended for medical weight loss programs