If I quit smoking now, will my lungs return to their original condition?

It's never too late to quit smoking. Though the damages inflicted by years of cigarettes can't be completely undone, quitting smoking will immediately start the healing process. Within just a few days of quitting, your lung function will begin to improve and you'll start to feel less short of breath. After two weeks, your sense of smell and taste will improve, and after three months your circulation will get better and you'll have more energy. Within a year, your risk of heart disease will be cut in half. Even after years of smoking, quittingsmoking will still have positive effects on your health. So if you're ready to quit, don't wait - the sooner you quit, the better off you'll be.