The Nazis were fairly anti-smoking because Hitler was a non-smoker. They did some epidemiological research which indicated a higher rate of lung cancer in smokers. There have been suggestions that the research was deprecated in the west because of fears of giving credence to Nazi ideals or policies. However, it was the first medical research into smoking. The more research was done the more the ill effects were discovered, while the industry worked hard to suppress everything. There is a similar pattern of behaviour with fossil fuels and climate change.
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