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Hyperhomocysteinemia or elevation of plasma total homocysteine, is a major risk factor for cardiovascular disorders, stroke and vascular dementia

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Abstract

Homocysteine is produced physiologically in all cells, and is present in plasma of healthy individuals (plasma [HCy]: 3–10µM). While rare genetic mutations (CBS, MTHFR) cause SEVERE hyperhomocysteinemia ([HCy]: 100–200µM), mild-moderate hyperhomocysteinemia ([HCy]: 10–100µM) is common in older people, and is an independent RISK factor for stroke and cognitive impairment. As B-vitamin SUPPLEMENTATION (B6, B12 and folate) has well-validated homocysteine-lowering efficacy, this may be a readily-modifiable risk factor in vascular contributions to cognitive impairment and dementia (VCID).




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