Smoking is by far the leading risk factor for lung cancer. About 80% of lung cancer deaths are thought to result from smoking. The risk of lung cancer for people who smoke is many times higher than for people who don’t smoke. The longer you smoke and the more packs a day you smoke, the greater your risk.

Dr. Soumitra Sinha Roy, Senior Consultant, Pulmonology discusses about the perils of smoking & its contribution in lung cancer.