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  2. Vitamin D deficiency - Wikipedia

    en.wikipedia.org/wiki/Vitamin_D_deficiency

    Mapping of several bone diseases onto levels of vitamin D (calcidiol) in the blood [6] Normal bone vs. osteoporosis. Vitamin D deficiency is typically diagnosed by measuring the concentration of the 25-hydroxyvitamin D in the blood, which is the most accurate measure of stores of vitamin D in the body.

  3. Vitamin deficiency - Wikipedia

    en.wikipedia.org/wiki/Vitamin_deficiency

    The signs and symptoms of niacin deficiency start to revert within days of oral supplementation with large amounts of the vitamin. [23] [24] Chronic alcoholism is a contributing risk factor. Pantothenic acid (Vitamin B 5) deficiency: Irritability, fatigue, and apathy. [25] [26] Extremely rare. Vitamin B 6 deficiency

  4. Senile osteoporosis - Wikipedia

    en.wikipedia.org/wiki/Senile_osteoporosis

    While senile osteoporosis is categorized as an involuntary, Type II, and primary osteoporosis, which affects both men and women over the age of 70 years. It is accompanied by vitamin D deficiency, body's failure to absorb calcium, and increased parathyroid hormone. [2] [3] Research over the years has shown that senile osteoporosis is the ...

  5. Vitamin B12 deficiency symptoms - AOL

    www.aol.com/finance/vitamin-deficiency-cause...

    Vitamin B12 deficiency symptoms . Vitamin B12 deficiency has a few hallmark symptoms, according to doctors: Lack of energy. Mental fatigue. Nausea, vomiting, or diarrhea. Lack of appetite. Weight loss

  6. Human nutrition - Wikipedia

    en.wikipedia.org/wiki/Human_nutrition

    Among the elderly, deficiencies in vitamins B12, B6, and folate are linked to cognitive decline and depressive symptoms. [ 173 ] The Recommended Dietary Allowance (RDA) for vitamin B12 is 0.9-2.4 μg/day, while the estimated average requirement in the U.S. and Canada is 0.7-2 μg/day.

  7. Vitamin D - Wikipedia

    en.wikipedia.org/wiki/Vitamin_D

    In women, vitamin D receptors are expressed in the superficial layers of the urogenital organs. There is an association between vitamin D deficiency and a decline in sexual functions, including sexual desire, orgasm, and satisfaction in women, with symptom severity correlated with vitamin D serum concentration.