Is There Proof That Smoking Causes Lung Cancer?
The American Association for Cancer Research indicates that smoking tobacco is the most important risk factor for developing lung cancer. Additionally, inhaling the smoke of others, or second-hand smoke, also increases one’s risk of lung cancer. It is the dangerous chemicals within tobacco that greatly damage the lungs, which can eventually lead to the onset of lung cancer. There is a positive correlation between smoking and lunch cancer, meaning that the more a person smokes, the greater his or her chances of developing lung cancer.
