bad effect of cigarette smoking and Your Heart - How Smoking Affects the Heart and Blood Vessels Social Smoking Damages Your Lungs
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de Mesquita J

After just one year, your risk of having a heart attack*3 has halved to that of what it was when you were a smoker
After the tobacco industry experienced a major legal defeat in 2006, they were finally forced to tell the truth about the deceptive marketing tactics used to sell some types of cigarettes

NPR.org

When it comes to smoking, quitters always win