First of all, quitting smoking can remove tar and restore health is certain. But this process is slow, it takes several years for light smokers and more than ten years for heavy smokers. Paying attention to diet can shorten the time.

Diet: Have healthy eating habits, eat less fried and grilled foods, reduce mucus accumulation (which is also one of the common diseases of unhealthy lungs), and stimulate the lungs to clean themselves. The following foods can be added to the daily diet.

Garlic, ginger and onion; Wheat straw, spinach, kelp; Alkaline foods such as fresh fruits and vegetables; Antioxidants, such as green tea;

Drink more water.

Exercise: Exercise is very important for the recovery of lung function. Doing aerobic exercise helps to expand the lungs, and taking a deep breath can better discharge harmful toxins and bad gases. Exercise more and increase blood flow, which can filter out impurities faster and accelerate overall health.