Introduction

unknown wrote an intriguing post today on
Here’s a little taster
[7] Factors such as secondhand smoke, residential radon exposure, and familial susceptibility are known to contribute to some cases of lung cancer in never-smokers, but the cause of many cases remains unknown. … But for women who do smoke , it’s important to realize that quitting smoking provides important lung cancer benefits. Compared with nonsmokers, women who smoke more than 20 cigarettes per day are roughly 20 times more likely to die of lung cancer. …

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