ヒト集団における微量栄養素のがん予防効果

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タイトル別名
  • Cancer Prevention by Micronutrients in Humans
  • ヒト シュウダン ニ オケル ビリョウ エイヨウソ ノ ガン ヨボウ コウカ

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This article reviews possible preventive effects on cancer by micronutrients on the basis of worldwide epidemiological investigations in humans. Cohort and case-control studies indicate clearly that vegetable and fruit consumption decreases the risk for most sites of cancer. The risk reduction is observed not only for gastrointestinal tract cancers, but also for other sites (e.g. breast) of cancers. Consumption of vitamin C and β-carotene is related to risk reduction. Four large-scale randomized intervention studies have been reported. A study done in Linxian, China indicates that, among various micronutrients administered, β-carotene; vitamin E, and selenium reduced the risk of gastric cancer by 21%. However, a study on US male physicians showed no effects by β-carotene and two other studies on heavy smokers showed some elevated risk for lung cancer. Although more consumption of vegetables and fruits should be recommended to the general public for the prevention of cancer, further extensive investigations are needed to identify truly effective micronutrients contained in vegetables and fruits.

収録刊行物

  • ビタミン

    ビタミン 73 (3), 127-134, 1999

    公益社団法人 日本ビタミン学会

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