My mother smoked ALOT when she was pregnant and our whole lives...my brother ended up dying of lung cancer...Who knows?
My Dad was a smoker and he never made it past 92
And for every story like that, their are others, which contradict it.
I'm sorry to hear that, Hildy. However, I hope you don't blame your mother for that. Our dear friend, who never smoked a day in his life, and didn't grow up in a home where there were any smokers and didn't live his adult life around smokers (he was a principal of a school) also died of lung cancer at the young age of 40.
Cancer has so many causes these days, and some are simply unexplainable.