The harm of smoking is well known to most people-it increases the risk of cancer, heart disease, stroke and other chronic diseases, not to mention bad smell and yellow fingers and teeth. Many non-smokers cannot help wondering: in this case, why are so many people smoking? Why can’t you quit? Today, let’s talk about quitting smoking. Why is smoking so enjoyable? Smoking is undoubtedly an addictive thing, Nicotine is as addictive as some drugs. The principle of smoking is: Nicotine enters the brain, binds nicotine receptors, promotes dopamine secretion, activates the brain’s reward mechanism, and you feel comfortable. Then nicotine is quickly metabolized, dopamine levels drop, you have a withdrawal reaction, and you look for the next cigarette to provide Read More …