Originally posted by kamn
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Perhaps the most dangerous part about smoking is that vastly increases the heart's blood-clotting tendency, putting him at high risk for heart attacks and strokes. Smokers are more likely to die of heart diseases than any cancer.
To address another point I often see raised: Most smokers believe that smoking "calms them down." In reality, most ex-smokers find that they are much more relaxed after having quit. The half-life of nicotine in the bloodstream is about 30 minutes. Since most smokers can't and don't smoke every 30 minutes, their bodies are in almost constant, low-grade withdrawal. They feel calmer after having smoked because they have relieved those withdrawal symptoms.
Nicotine acts as a depressant for those who are not addicted, but most regular smokers are addicted. Once addicted, any chemical ups or downs the drug used to give you are absent. The good feeling a smoker feels when drawing on a cigarette comes from the relief of withdrawal.
I started smoking when I was a teenager because I wanted to look cool. I became addicted very quickly, and it took me nearly 12 years to quit. I can only speak for myself and others close to me, but in my experience, if anyone gives you a reason other than "I am addicted to nicotine" for why they continue to smoke, you're not getting their logical minds. An addicted brain is very clever at convincing ourselves that we're smoking for good reasons instead of just plain-old addiction.
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