Quote from cumberland40
does smoking really cause Lung cancer??? forget about other diseases that are being linked to smoking, let us just talk about lung cancer.
how come only 10 percent of all the people that has lung cancer smoke? what happen to other 90 percent?
Please provide a link for that stat as it is incorrect.
The vast majority patients with primary lung cancer smoke. Barring that, many others have exposure to mining, chemicals, radiation or have histories of breathing disorders that predispose them to the disease.
In addition, smoking is a significant factor in development of other cancers, such as bladder, pancreatic, head/neck, esophageal, laryngeal, gastric.
Now ocasionally some pro smoking group will decrease the stats by including as "lung cancer", tumors of a different primary that metastasized to the lungs. But those are not "Lung cancer" as they are from a different primary disease.
In addition, smoking makes our ability to cure/treat cancer more difficult. The only definitive cure for most cases of lung cancer is a curative resection, with or without chemo/rad. If the patient has already damaged enough lung tissue, this thorough resection cannot be done, and the other treatments will only buy time. In addition, chemo can be cardiotoxic and many smokers have damage to their heart from smoking.