One us study found that quitting smoking for five years reduced the risk of cardiovascular disease by nearly 40 per cent.

美国的一项研究显示，戒烟5年可以降低近40%的心血管疾病风险。

戒烟可降低心血管疾病

To reduce the risk of cardiovascular disease to the same level as nonsmokers, it would take five to 25 years to quit smoking.

如果你想把心血管疾病的风险降低到与不吸烟者相同的水平，你需要戒烟5到25年。

Researchers at Vanderbilt university medical center came to this conclusion after analyzing data from 8,770 residents of framingham, mass., from 1954 to 2014.

范德比尔特大学医学中心的研究人员在分析了马萨诸塞州弗雷明汉8770名居民从1954年到2014年的数据后得出了上述结论。

吸烟危害大

The researchers defined heavy smokers as those who smoked at least a pack of cigarettes a day for at least 20 years.

研究人员把每天至少抽一包香烟、吸烟至少20年的人定义为重度吸烟者。

The study found that heavy smokers who had quit had a 39% lower risk of cardiovascular disease over five years than heavy smokers who had not quit.

研究发现，与还没有戒烟的重度吸烟者相比，已经戒烟的重度吸烟者5年内心血管疾病发病风险可降低39%。

If you want to reduce your risk of cardiovascular disease to the same level as if you had never smoked, the duration of quitting varies from five to 25 years.<>

如果想将心血管疾病发病风险降至与从未吸烟者相同的水平，戒烟时长因人而异，少则5年，多则25年。

Previous studies have shown a link between quitting smoking and a reduced risk of cardiovascular disease, the researchers wrote in the latest issue of the journal of the American medical association.

研究人员在最新一期《美国医学会杂志》周刊刊载的文章中写道，先前研究显示戒烟与心血管疾病风险降低有关联。

The study's findings are at odds with current U.S. clinical guidelines that consider people who quit smoking for five years to be at similar cardiovascular risk to nonsmokers.

美国现行临床指南认为戒烟5年者心血管疾病风险类似于不吸烟者，而这项研究的发现与指南不一致。

For smokers, however, "even after decades of smoking, the cardiovascular system starts to recover more quickly.

不过，对吸烟者而言，“哪怕是吸烟数十年的‘老烟枪’戒烟，心血管系统开始以较快速度康复。

Full recovery can take years, so now is a good time to stop smoking and take other steps to improve heart health.

完全康复可能需要多年，因而现在正是停止吸烟、采取其他措施促进心脏健康的好时候”。