I find this interresting, i think smoking is not the whole cause of cancer. My parents both smoked all there lives. My dad died of old age at 80 and never had a day of work till his last two weeks. He worked up untill his death.Ive known so many people that have died of it and it runs in families. None of my family have ever had it. Yes i smoke, none of my animals have ever died of cancer. Three dogs lived to an old age and a 23 yr old cat. To be honest i think to much blame is put on smoking and nothing is done about the more likly causes polution, pesticides etc. Granted it carnt do your body much good but the other likely causes are not stressed because it would be too costly to put right. val