Dunno where you got the 20% stat, but it’s totally wrong. From cancer.org: > The risk of lung cancer for people who smoke is many times higher than for people

Dunno where you got the 20% stat, but it’s totally wrong. From cancer.org: > 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. MANY TIMES