This study was published in the journal of Cancer Epidemiology, Biomarkers & Prevention. It shows that eating "more than eight sub-groups" of vegetables cuts the risk of developing lung cancer by 23% compared with eating "less than four sub-groups.” María José Sánchez Pérez, co-author of the study said that, "Aside from the amount consumed, it's also important to take into account the variety. A varied diet reduces the risk of developing this cancer, above all in smokers." The risk among smokers of developing epidermoid carcinoma of the lung falls by 12%.
The European Prospective Investigation into Cancer and Nutrition (EPIC) involves 23 centres from 10 European countries (Germany, Denmark, Spain, France, Greece, Holland, Italy, Norway, the United Kingdom and Sweden, working with a sample of 500,000 European subjects (41,000 of whom live in the Spanish regions of Asturias, Granada, Guipúzcoa, Murcia and Navarre).
The researchers stressed however that the most effective way of reducing the risk of lung cancer was quitting smoking. Whether or not someone is a smoker having a diet rich in a variety of fruits and vegetables is a good first step to health.
Sources: SINC, FECYT - Spanish Foundation for Science and Technology