A study conducted by Dr. Wald of the US National Institutes of Health 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 Leo Kinlen of London 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." He also wrote that leukemia should be added to the US National Institutes of Health list of tobacco-related causes of death.
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." He also wrote that leukemia should be added to the World Health Organizations' list of tobacco-related causes of death.