what does tobacco do to the heart Impact of smoking on cardiovascular health: Mechanisms, epidemiology and specific concerns regarding congenital disease Marijuana and your heart |

Marijuana and your heart Nature Every puff throws your heart off beat. Your heart is designed to beat in a steady rhythm, but smoking can disrupt that balance. Nicotine and other harmful chemicals increase stress on the The Disturbing Link between Heart Disease and Smoking Smoking affects the heart long before symptoms appear. Each cigarette delivers chemicals that enter the bloodstream within seconds, reaching the heart and blood vessels almost immediately. These substances damage the inner lining

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