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Men in both studies, on a diet devoid or nearly devoid of vitamin C, had blood levels of vitamin C too low to be accurately measured when they developed signs of scurvy, and in the Iowa study, at this time were estimated (by labeled vitamin C dilution) to have a body pool of less than 300 mg, with daily turnover of only 2.5 mg/day.
Mayo Clinic also notes that for most people, a healthy diet alone can supply enough vitamin C. “Aim to get at least 90 mg per day of vitamin C from food,” Blautner recommends. She suggests the ...
The causes are vitamin A deficiency during pregnancy, followed by low transfer of vitamin A during lactation and infant/child diets low in vitamin A or beta-carotene. [ 4 ] [ 5 ] The prevalence of pre-school age children who are blind due to vitamin A deficiency is lower than expected from incidence of new cases only because childhood vitamin A ...
Research shows the use of vitamin E and onion extract (sold as Mederma) as treatments for scars is ineffective. [52] Vitamin E causes contact dermatitis in up to 33% of users and in some cases it may worsen scar appearance and could cause minor skin irritations, [55] but Vitamin C and some of its esters fade the dark pigment associated with ...
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The predominant cause of nutritional optic neuropathy is thought to be deficiency of B-complex vitamins, particularly thiamine [2] (vitamin B 1), cyanocobalamin (vitamin B 12) and recently copper. [3] Deficiency of pyridoxine (vitamin B 6), niacin (vitamin B 3), riboflavin (vitamin B 2), and/or folic acid also seems to play a role. Those ...
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Cooking can reduce the vitamin C content of vegetables by around 60%, possibly due to increased enzymatic destruction. [37] Longer cooking times may add to this effect. [38] Another cause of vitamin C loss from food is leaching, which transfers vitamin C to the cooking water, which is decanted and not consumed. [39]