tokens: RESULTS : After adjustment for cardiovascular disease risk factors , type of diabetes medication used , duration of diabetes , and intakes of folate , vitamin E , and beta - carotene , the adjusted relative risks of total cardiovascular disease mortality were 1 . 0 , 0 . 97 , 1 . 11 , 1 . 47 , and 1 . 84 ( P for trend < 0 . 01 ) across quintiles of total vitamin C intake from food and supplements .