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根据美国Alabama大学营养学家的研究结果,吸烟可以使肺部产生局部维生素缺乏,从而导致肺部出现癌前病变,而维生素可使其逆转。 这一概念的基础是香烟烟雾可使维生素失去作用,从而肺上皮就出现局部维生素缺乏区。该大学营养象主任Butter-worth最近完成了一项随机双盲研究。这项研究对70例每日至少吸一包香烟,连续吸20年以上的男性进行了观察,服药组每日服用10mg叶酸[推荐的每日允许(RDA)0.4mg]及SOOmg维生素B_(12)RDA3mg),另一组服两种安慰剂。所有70例男性的痰细胞检查均发现有癌前
According to a study of nutritionists at the University of Alabama in the United States, smoking can cause local vitamin deficiency in the lungs, leading to precancerous lesions in the lungs, which can be reversed by vitamins. This concept is based on the fact that cigarette smoke can make vitamins ineffective, so that the lung epithelium shows a local vitamin-deficient area. Butter-worth, director of nutrition at the university, recently completed a randomized, double-blind study. The study looked at 70 men who smoked at least one cigarette a day and continued to inhale for more than 20 years. The medication group took 10 mg folic acid daily [Recommended daily allowance (RDA) 0.4 mg] and SOO mg vitamin B (12). ) RDA3mg), another group took two placebos. All of the 70 male sputum cells were found to have precancerous conditions