An elevated level of total homocysteine (tHcy) in blood-hyperhomocysteinemia, is prevalent and strong risk factor for atherosclerotic vascular disease in the coronary, cerebral and peripheral vessels and for thromboembolism (arterial and venous). Elevated total homocysteine confers a graded risk with no threshold, is independent of but may enhance the effect of conventional risk factors. Hyperhomocysteinemia seems to be a particularly strong predictor of cardiovaskular mortality. Supplementation with B-vitamins, in particular with folic acid, is an efficient, safe and inexpensive means to reduce an elevated total homocysteine level.
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