A bit OT but I have to say the dangers of smoking have been known for a long long time and I get slightly annoyed when people say they never realised. I'm 58 and when I was a child cigarettes were refered to as 'coffin nails' so how could anyone not know?
I come from a smoking family but have never smoked myself and I hate seeing young people starting to smoke today. I do drink however, despite knowing the dangers. It's all down to personal choice.