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How smoking causes cardiovascular system damage Atherosclerosis, in which blood vessels become narrow and less flexible, Coronary heart disease occurs when blood vessels are blocked A stroke is a loss of brain function when blood flows Peripheral artery disease (PAD) and peripheral vascular disease occur An abdominal aortic aneurysm is a bulging or weakened area that occurs How Does Cigarette Smoke Damage Your Blood Vessels

Carbon monoxide in the body from smoking also lowers blood oxygen levels, making it more difficult for your heart and lungs to work while under anesthesia

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