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美国科学家的一项研究说明了吸烟者长期以来疑惑不解的问题:为什么吸烟者戒烟之后会增加体重。一般说来,吸烟者的体重小于不吸烟者的体重。有关专家说这是因为烟草中所含的尼古丁有助于促进人体对于食物能量的消耗。该研究表明戒烟者的体重往往要恢复到不吸烟者的体重。美国政府研究人员对70年代早期和80年代早期所进行的两次保健科研项目进行了考察,这些美国全国性的科研项目涉及到9000人。研究人员发现,一般
A study by American scientists illustrates the puzzling question for smokers over a long period of time: why smokers increase their weight after quitting smoking. In general, smokers weigh less than non-smokers. Experts say this is because nicotine contained in tobacco helps to promote the body’s energy consumption of food. The study shows that quitters often have to regain the weight of non-smokers. US government researchers examined two health-care research projects conducted in the early 1970s and early 1980s, involving 9,000 nationwide research projects. The researchers found that, in general