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As a therapy, it is used to prevent and treat scurvy, a disease caused by vitamin C deficiency. Vitamin C is an essential nutrient involved in the repair of tissue, the formation of collagen, and the enzymatic production of certain neurotransmitters. It is required for the functioning of several enzymes and is important for immune system ...
Scurvy, including subclinical scurvy, is caused by a deficiency of dietary vitamin C, since humans are unable to metabolically synthesize vitamin C. Provided the diet contains sufficient vitamin C, the lack of working L-gulonolactone oxidase (GULO) enzyme has no significance, and in modern Western societies, scurvy is rarely present in adults ...
Vitamin C megadosage is a term describing the consumption or injection of vitamin C (ascorbic acid) in doses well beyond the current United States Recommended Dietary Allowance of 90 milligrams per day, and often well beyond the tolerable upper intake level of 2,000 milligrams per day. [1]
As a supplement it is used to treat vitamin B12 deficiency including pernicious anemia. [1] [2] Other uses include treatment for cyanide poisoning, Leber's optic atrophy, and toxic amblyopia. [3] [4] It is given by injection into a muscle or vein, [2] by pill or sublingually. Side effects are generally few. [2]
Scurvy is a nutritional deficiency of water-soluble vitamin C or ascorbic acid. It is rare in the developing world and is mostly seen in infants, the elderly, and alcoholics, all who may have inadequate nutritional intake and malnutrition. [5]
Kwashiorkor is a type of severe acute malnutrition (SAM). SAM is a category, composed of two conditions: marasmus and kwashiorkor. [9] Both kwashiorkor and marasmus fall under the umbrella of protein–energy malnutrition (PEM). [10]
Insufficient vitamin D synthesis such as defective 25-hydroxylation, 1-alpha hydroxylase, and 1-alpha 25-hydroxylation can also contribute to vitamin D deficiency. Lack of vitamin D leads to reduced calcium absorption by the intestine leading to hypocalcemia and increased parathyroid hormone secretion. This increases bone resorption.
Deficiency of vitamin B 12 causes subacute combined degeneration, a disease classically associated with a central demyelinating process; however, it also presents with a painful peripheral neuropathy. Treatment of vitamin deficiencies focuses around repletion of specific deficiencies, recovery is often prolonged and some of the damage is often ...
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