Habitual consumption of cruciferous vegetables may confer men who are currently non smokers with significant protection against lung cancer.

​This study examined whether eating cruciferous vegetables regularly can help decrease the risk of lung cancer in non-smokers. Researchers analyzed the medical records of 82,330 Japanese men and women aged 45-74 years who responded to questionnaires on their dietary and smoking habits. 

Researchers discovered that frequent consumption cruciferous vegetables slashed the risk of acquiring lung cancer significantly in men who were never and former smokers. Evidence from this study indicate that adding more cruciferous vegetables to our diets can help to reduce the incidence of lung cancer in men who are non smokers.