维生素是一类天然存在于食物中的有机化合物。缺乏一种维生素可导致特殊的缺乏综合症。在维生素缺乏的临床情况下,补充大剂量的维生素是合理的。然而,在许多非缺乏性疾病的防治中,却提倡大剂量应用维生素(通常大于推荐的食物允许量的10倍),因此似有必要对此领域的知识现状加以评价。 Vitamins are a class of organic compounds that naturally occur in foods. Lack of a vitamin can cause special deficiency syndrome. In the clinical context of vitamin deficiency, it is reasonable to supplement large doses of vitamins. However, the administration of high doses of vitamins (often greater than 10 times the recommended food allowance) has been advocated in many non-dementia diseases and it seems necessary to evaluate the current state of knowledge in this area.