thats a god damned LIE , l smoked from 1975 till my father died of throat cancer in 2000 [ he died from smoking PallMall 100's non-filter all his life [ l quit cold turkey after that, l relapsed a few times but aint touched one in 20 years [ l have chronic fatigue syndrome [ my lungs dont process enuf oxygen to support my fat ass ] , nodules on my lungs and use a CPAP machine ] just so you know l smoked Marlboro 100's for 25 years [ pack a day during the week ] and then probly 6 packs on the weekends drinking [ so double or more] and the older l got the WORSE my lungs got , so that Doctor lied his ass off to youI smoked for a good ten years. After 10 years your lungs go back to normal. Dr said you will die from smoking if you hit 40 pack years. 1 pack a day for 40 years. Or two packs for 20.