As for the physical aspects, I can't say for certain, but most people who smoke won't quit by 30. Addiction is a terrible thing, and once addicted most people can't stop, no matter what damage smoking may cause, so I would say from a psychological aspect, no it is not reversible
The body is a miraculous machine, and can heal itself of almost anything with the proper mental and spiritual energy. However, the side effects of smoking that we usually don't consider are sometimes the most irreversible.
1. Smoking a cigarette takes about 7 minutes. Even if a person only smokes two cigarettes per day, over a 20-year period, that's more than 70 days of smoking time. Heavier smokers who use, say, 10 cigarettes per day would spend over 354 days in smoking time over 20 years. What would you do with an extra year of your life? This is a year without sleeping time, eating time, or anything sles. That time can never be recovered.
2. Smoking is a social cancer. Aside from the obvious environmental impacts of smoking, the habit also fouls the social environment around a person. Smokers tend to hang out with smokers, because non-smokers don't want to smell like them. Smokers in many places are an independent social group. Our peers tend to influence our decisions heavily, even if not consciously. Think of the personal network of a lifelong smoker.
Some things are more than just medical bills.
As a seasoned smoker, I'm clocking in at around 15 years of smoking and counting,
In my view (not professional) the effects are fully reversable given enough time for the body Mind and spirit to heal, if there are any effects at all.
Offtopic but,
The term heavy in the UK refers to 20+ cigarettes a day, where 10 a day is quite a light smoker |
Offtopic but, My comments here may be quite biased as if you read a topic I posted earlier 'am I a freak of Nature' you will understand that although I smoke and only occationally run around a soccer field I'm a pretty healthy guy with no ill effects from my lifestyle. |
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would spend over 354 days in smoking time over 20 years. What would you do with an extra year of your life? This is a year without sleeping time, eating time, or anything sles. That time can never be recovered. |
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Smokers tend to hang out with smokers, because non-smokers don't want to smell like them |
I been smoking for 10 years myself. Like an idiot I started because I thought it was cool I wish I never had now but I guess its to late to drown in sorrows and I could quit. Quit yeah thats funny I bet every smoker in the world has tried to quit sometime in their life. 10 cigarettes a day is NOT a heavy smoker, a heavy smoker smokes between 40 and 60 cigarettes a day. I smoke between 20 and 30 a day.