"Diesel is a cancer machine" How come that nations that have more diesel engines don't suffer from cancer more? In Ireland or Italy, something like 40 per cen

"Diesel is a cancer machine" How come that nations that have more diesel engines don't suffer from cancer more? In Ireland or Italy, something like 40 per cent of new cars are diesels. In Finland it is less than 20 per cent and in the Netherlands less than 10 per cent. If diesel was a cancer machine, I would expect Italians to have a lot more cancer than the Dutch. Dose-response is a thing in toxicology.