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Drug therapy: pharmacologic aspects of cigarette smoking and nicotine addiciton

I thought you were wrong

According to the Centers for Disease Control and Prevention, smoking: Causes thickening and narrowing of blood vessels Raises triglycerides (a type of fat in your blood) Lowers HDL or "good" cholesterol Makes blood sticky and more likely to clot, which can block blood flow to the heart and brain Damages the cells that line the blood vessels

For example, some countries might let you bring a couple of cartons, while others limit you to just a pack or two

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Anna Gora is a health writer at Live Science, having previously worked across Coach, Fit&Well, T3, TechRadar and Tom's Guide