is an occasional cigarette ok Light and Social Smoking Carry Cardiovascular Risks - Harvard Health Publishing Think an occasional cigarette is

Think an occasional cigarette is harmless? Doctor explains why even casual smoking can damage your health Health Is it OK to have an occasional cigarette, or experience secondhand smoke? , Dr. Byron Patton, thoracic surgeon and lung cancer expert, breaks down the facts and shares a simple rule: your lungs were Single cigarette takes 20 minutes off life expectancy, study finds Figure is nearly double an estimate from 2000 and means a pack of 20 cigarettes costs a person seven hours on average. : r science Light or Social Smoking Risks Geisinger

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