Smoking has generally declined in the United Statesfor the past 20 years, according to the study. Buteven light smoking is tied to cardiovascular andpulmonary diseases and increases in the risk ofcancer, the report noted。

研究表明，在过去的20年里，总体上美国的吸烟人群已经大大减少了。但报告指出，就算是轻度吸烟者也跟心血管、肺部疾病脱不了干系，也会增加患癌症的概率。

A new study has noted a rise in the proportion ofvery light smoking. The report defines very lightsmoking as no more than five cigarettes per day。

一项研究表明，轻度吸烟者的人群比例在增加。这份报告中把一天吸烟不超过五支的人定义为“轻度吸烟者。

Director of the Center for Tobacco Control at North Shore-LIJ Health System in New York alsotold the network that those who carry the habit of light smoking may not even considerthemselves as smokers at all or that they can easily quit the habit. She added that this type ofsmoker even tends to increase the amount they smoke over time to become a heavy smoker。

北岸医疗集团烟草控制中心的主任告诉网络媒体说，那些有轻度吸烟习惯的人也许根本意识不到自己是个吸烟者，甚至不会想到他们可以很容易地戒烟。她还补充说这类型的吸烟者甚至还会随着时间的推移进而增加自己的吸烟量，成为老烟枪。

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