My great grand mother died from lung cancer and never smoked one cigarette in her life. She was a humble and very sober woman. (no alcohol, no tobacco or drugs, just her medication). The reason, why she died of lung cancer is, that the area, where she grow up, was near coal mine & chemistry plant. LVL 89 tho, nice age anyways. RIP Grandma.
On the other hand, my neighbor from the rural area, where my mother was born & raised, lived all the way up to LVL 93. He had one shot of hard liquor every day and smoked exactly 3 cigarettes a day. His calm live and routines granted him a superior lifespan. He died from age, calmly in the bed, with relative good health for his level.