Why don’t many smokers get lung cancer?

It is an indisputable fact that smoking is harmful to health. But when you tell people to quit smoking, they’ll use “someone who smokes his whole life without lung cancer.” While smoking is the leading cause of lung cancer in large numbers, it is in practice that a small number of smokers suffer from lung cancer. Why don’t most smokers have lung cancer? Does this mean that smoking has no effect on the lungs? This issue tells you what the harm of smoking is to most people and teaches you how to quit smoking efficiently. Why don’t most smokers get lung cancer? DNA mutations accumulate in lung cells with age, and smokers are more likely to undergo DNA mutations than non-smokers. In other words, excluding other factors, lung cancer is less common among non-smokers than among smokers, while lung cancer is more prevalent among 10-20 per cent of lifetime smokers. Past studies have confirmed that smoking triggers a DNA mutation of normal lung cells leading to lung cancer. In general, smoking above a certain threshold triggers self-protection mechanisms within the smoker.