Additionally, a 20 micromol/L increase in blood ascorbic acid concentration, the same as a 50 g per day increase in fruit and vegetable intake, was associated with about a 20% reduction in risk of all-cause mortality. (73)
Vitamin C has been shown to be beneficial for people with certain diseases or conditions. High intakes of vitamin C have been associated with decreased risk of heart disease, cancer, eye diseases, and neurological conditions. High dose vitamin C, with an upper tolerable level set at 2g, has been shown to be safe. Among healthy individuals, the recommended daily intake of vitamin C is 75 mg for women and 90g for men. (74)
Vitamin B12 and coronary artery disease:
In a study involving 816 subjects (368 with coronary artery disease [CAD] and 448 controls) in India, levels of vitamin B12 were found to be significantly lower in patients with CAD, as compared to controls. Vegetarians were found to have lower levels of vitamin B12 and a higher incidence of coronary artery disease compared to nonvegetarians. (76)
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