now don't make people people completely stupid just because they don't have an university degree (or read HN). the fertility/ptence issues are not that famililar (and definitely should be spoken about more loudly, this would have bigger impact than photos of cancerous lungs), but even in very remote and undeveloped places, all know that smoking = potential lung cancer, and that's a very miserable way to die.

but guess what - all sorts of biases step in, we like to lie to ourselves, nicotine addiction isn't neglible either. in 2015, this information is world-widely known for years and years (apart from north korea, maybe), but people like to ignore it. somebody gets cancer from smoking? well man up and blame his own stupidity/weakness.