《科技日报》电,据《新科学家》网站3日报道,一项发表在《科学》杂志的研究称,平均每抽50根烟,每个肺细胞便会产生1个DNA突变。而每天抽20根烟的吸烟者连续抽一年,每个肺细胞、喉部细胞、咽部细胞、膀胱细胞和肾脏细胞分别会产生150个、97个、39个、18个和6个DNA突变。这是研究人员首次量化了分子损伤对DNA造成的影响。此前,流行病学研究指出,吸烟至少与17种癌症有关。美国新墨西哥州洛斯阿拉莫斯国家实验室的卢德米尔·亚历山道 According to a report by Science Daily, a study published in Science magazine found that on average every 50 cigarettes smoked, one lung DNA mutation was produced in each lung cell, according to the New Scientist website. Smokers smoked 20 cigarettes per day for a continuous year and produced 150, 97, 39, 18 and 6 DNAs per lung, throat, pharyngeal, bladder and kidney cells, respectively mutation. This is the first time researchers have quantified the effects of molecular damage on DNA. Previously, epidemiological studies have pointed out that smoking is associated with at least 17 types of cancer. Ludmills Alexandria, Los Alamos National Laboratory, New Mexico, USA