When was smoking found harmful




















Aficionados of the AMC show Mad Men might recall the pilot episode's key tension revolves around the development of a pre strategy to combat the claims that cigarettes were poisonous. But the Terry Report changed all of that. At that point, over 42 percent of American adults were smokers.

In addition to listing all the dangers and diseases associated with smoking, Terry also took the extraordinary step of calling for government involvement in the issue. Across the decades, the national effort to separate Americans from their cigarettes has manifested itself in the creation of warning labels on packs of cigarettes , the launching of free anti-smoking PSAs on television , the creation of smoking sections in restaurants, airplanes, and elsewhere in the s, and the banning of cigarette advertisements.

Eventually, full smoking bans took root as well. Evidence had been gathering for more than a decade beforehand. In , Richard Doll, a researcher working for the Medical Research Council, and Bradford Hill, an epidemiologist at the London School of Hygiene, began looking at lung cancer patients in London hospitals.

The patients were asked about family history, diet and previous diseases. In cases of lung cancer, two were non-smokers. Doll immediately gave up his own five cigarettes a day habit. Doll and Hill extended their research to Cambridge, Bristol and Leeds and, after speaking to some 5, people, found the same results.

In , the researchers wrote to 59, doctors and asked about their smoking habits. They kept a watch on the doctors' health and published the results in in a paper now deemed so important that the British Medical Journal reprinted the first page last June, 50 years after the original report.

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