Smoking Is often associated with breathing trouble, but its impact on the heart can be just as serious. Tobacco smoke contains harmful chemicals that can affect {blood vessels|arteries|, blood pressure, oxygen levels, and the way blood clots. The alarming part is that these changes may begin quietly, even when you https://www.diigo.com/item/note/b2kov/6kom?k=3f315b719090eb88534867779886ba9e