How does cigarette smoking affect the heart

How does cigarette smoking damage the heart?
Smoking greatly increases your risk of developing heart disease. Depending on the duration of tobacco use, those who smoke up to 25 cigarettes a day are almost twice as likely to develop heart disease as those who don’t smoke; those who smoke 25 to 34 cigarettes a day are about three times as likely; and those who smoke more than 35 cigarettes a day are four times as likely to develop heart disease as nonsmokers. There are many ways that smoking contributes to heart disease.

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