[KSig RC]

Originally Posted by 33girl

But if a smoker's lung cancer risk decreases this much when he quits, wouldn't it be even quicker for a nonsmoker who left a smoky environment?

I'm not sure those statistics are accurate - I mean, it's a sales web site, and there's no citation whatsoever . . . the SG warning that said "Quitting Smoking Now Greatly Reduces Serious Risks to Your Health" wasn't because the risk of lung cancer would actually go down, IIRC, it was more because it wouldn't continue to increase (as it would continuously if the individual continued to smoke).