Originally Posted by slim_slag
Stopping smoking actually isn't going to make that much difference to your BP, but it is the most important thing you can do in order to prevent an early death and/or a life of illness from many other causes.
Nicotine restricts blood vessels and raises blood pressure. Although smokers think smoking relaxes them, it actually makes their hearts work harder to pump blood to all parts of their bodies. Smoking may also cause artery damage, which increases plaque build-up and makes arteries less flexible.
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