A study conducted by Dr. Leo Kinlen of the University of Edinburgh and Robert Miller of the US National Institutes of Health shows that smokers are more likely to die from monocytic and myeloid leukemias than are non - smokers . They wrote that it was ``the largest study of leukemia and smoking habits to date (and) represents additional evidence that leukemia is a smoking-related disease.'' The data also suggest 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 can cause leukemia . " He also wrote that leukemia should be added to the World Health Organizations ' list of tobacco - related causes of death .
A study conducted by Dr. Leo Kinlen of the University of Edinburgh and Robert Miller 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 suggest 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 can cause leukemia . " He also wrote that leukemia should be added to the World Health Organizations ' list of tobacco - related causes of death .