Smoking cigarettes is a widely recognized risk factor for heart disease. But new research shows that nicotine itself can damage blood vessels. Further research might question the benefit of smoking cessation aids that contain nicotine, such as gum and pat

Smoking cigarettes is a widely recognized risk factor for heart disease. But new research shows that nicotine itself can damage blood vessels. Further research might question the benefit of smoking cessation aids that contain nicotine, such as gum and pat

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