The death rate among smokers was 53 percent higher, and among ex-smokers 39 percent. A study conducted by Dr. Leo Kinlen of the University of Edinburgh and E. Rogot of the US National Institutes of Health shows that smokers are more likely to die from monocytic and myeloid leukemias than are non-smokers. The data also suggested that even ex-smokers are significantly more at risk than those who never smoked. Professor Wald of St. Bartholemew's Hospital in London cautioned that no cause-and-effect had been established but, he added, "the balance of evidence suggests that smoking may cause leukemia. " In a recent editorial, Dr David Colquhoun of Oxford University, an expert on cancer epidemiology, said there was "compelling evidence" for links between tobacco use and cancer.
A study conducted by Dr. Leo Kinlen of the University of Edinburgh and E. Rogot of the US National Institutes of Health shows that smokers are more likely to die from monocytic and myeloid leukemias than are non-smokers. The data also suggested that even ex-smokers are significantly more at risk than those who never smoked. Professor Wald of St. Bartholemew's Hospital in London cautioned that no cause-and-effect had been established but, he added, "the balance of evidence suggests that smoking may cause leukemia." In a recent editorial, Dr David Colquhoun of Oxford University, an expert on cancer epidemiology, said there was "compelling evidence" for links between tobacco use and cancer.