According to new  study smokers who enjoy eating a lot  of Soy have proved a lower risk of lung cancer.Soy contains Isoflavones which act similar to estrogen and prostate, the researches note in the American Journal of Clinical Nutrition. Cells in the lung have properties that suggest they may also respond to isoflavones.
     
Dr.Taichi Shimazu, of the National Cancer Center in Tokyo, and his colleagues, studied more than 36,000 men, 45 to 74 years old and free of the cancer at the start of the study.

The research followed them for about 11 years, after surveying their food intake, smoking status, medical history and other lifestyle factor. Overall rates of lung cancer were small : 481 men - or about one in 75.

 Among the slightly more than 13,000 men who never smoked, ther were 22 lung cancer cases among men who ate soy, and justy 13 lung cancer cases among thoes who ate the most.

The authors note that men who eat soy may be more likely to take part in other activities that lower the risk of lung cancer, or may be  more likely to eat other healthy food. However the current study did not gather data in isoflavone supplement use. In other words, the study does not provide enough evidence to suggest a change in eating behavior.