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Vitamin E revisited: do new data validate benefits for chronic disease prevention?

机译:重新审视维生素E:新数据是否证实了预防慢性病的益处?

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PURPOSE OF REVIEW: Vitamin E benefits in human health and chronic disease prevention are evaluated with respect to established alpha-tocopherol functions during vitamin E deficiency, adequacy, and excess. RECENT FINDINGS: Baseline vitamin E status of the 29 092 Finnish men participating in the Alpha-Tocopherol, Beta-Carotene Cancer Prevention study showed that the men in the highest compared with the lowest quintile of serum alpha-tocopherol had significantly lower incidences of total and cause-specific mortality. New findings from the Women's Health Study support a role for vitamin E supplements in decreasing the risk for sudden death from cardiovascular disease and from thromboembolism. We speculate that a potential mechanism may involve vitamin E interference in vitamin K activation. SUMMARY: alpha-Tocopherol acts as a peroxyl and alkoxyl radical scavenger in lipid environments, and thus it prevents lipid peroxidation in lipoproteins and membranes, especially nervous tissues. Decreased chronic disease incidence is associated with lifelong generous dietary vitamin E intakes, but more than 90% of Americans do not consume the recommended dietary amounts (15 mg/day). Vitamin E supplements can have beneficial effects on health beyond those from dietary amounts, perhaps because pharmacologic levels also upregulate hepatic xenobiotic pathways.
机译:审查目的:针对维生素E缺乏,充足和过量时所建立的α-生育酚功能,评估了维生素E在人类健康和慢性疾病预防中的益处。最近的发现:参加Alpha-生育酚,β-胡萝卜素癌症预防研究的29,092名芬兰男性的基线维生素E状况显示,血清中的α-生育酚含量最高的男性与最低的五分之一男性相比,总胆固醇和维生素E的发生率显着降低。特定原因的死亡率。妇女健康研究的新发现支持补充维生素E在降低心血管疾病和血栓栓塞猝死风险中的作用。我们推测潜在的机制可能涉及维生素E干扰维生素K活化。简介:α-生育酚在脂质环境中充当过氧化物和烷氧基自由基的清除剂,因此可防止脂蛋白和膜(尤其是神经组织)中的脂质过氧化。慢性疾病发病率的降低与终身摄入大量维生素E有关,但超过90%的美国人不摄入建议的饮食量(15毫克/天)。补充维生素E可以对健康产生有益影响,而不仅仅是饮食中的维生素E,这可能是因为药理学水平还可以上调肝异源性途径。

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