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This study was a retrospective, case-control study that compared smoking habits of 684 individuals with bronchogenic carcinoma to those without the condition. [12] The survey included questions about smoking: starting age, 20 year tobacco consumption, brands used; as well as inquires about exposure to hazardous agents in the workplace, alcohol use, and causes of death for family members.
A major conclusion of the study is, for example, that smoking decreases life span up to 10 years, and that more than 50% of all smokers die of a disease known to be smoking-related, although the excess mortality depends on amount of smoking, specifically, on average, those who smoke until age 30 have no excess mortality, those who smoke until ...
The potential effects of smoking, such as lung cancer, can take up to 20 years to manifest themselves. Historically, women began smoking en masse later than men, so an increased death rate caused by smoking amongst women did not appear until later. The male lung cancer death rate decreased in 1975—roughly 20 years after the initial decline in ...
Dr. Edward Creagan, MD, FAAHPM, a cancer specialist who practiced at Mayo Clinic for more than 40 years, explains that the reason why smoking can cause so many different types of cancer is that it ...
The first paper, published in 1950, was a case-control study comparing lung cancer patients with matched controls. Doll and Hill also started a long-term prospective study of smoking and health. This was an investigation of the smoking habits and health of 40,701 British doctors for several years (British doctors study). Fisher was in profound ...
At least 20.8 million years of life lost from smoking tobacco alone, study reveals
We've made massive strides against the deadly disease, but rates haven't fallen for people diagnosed with the disease who've never smoked.
[42] [43] In 1950, he published research in the British Medical Journal that showed a close link between smoking and lung cancer. [44] Four years later, in 1954 the British Doctors Study, a study of some 40 thousand doctors over 20 years, confirmed the suggestion, based on which the government issued advice that smoking and lung cancer rates ...