"The real cause of lung cancer, according to another Oxford research scientist, Dr. Kitty Little, is diesel fumes. And the evidence here is much more persuasive. It includes the facts that:
- tobacco smoke contains no carcinogens, while diesel fumes contain four known carcinogens;
- that lung cancer is rare in rural areas, but common in towns;
- that cancers are more prevalent along the routes of motorways;
- that the incidence of lung cancer has doubled in non-smokers over past decades;
- and that there was less lung cancer when we, as a nation, smoked more."
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