Are there any dietary factors that can help reduce the risk of lung cancer?

Lung Cancer - Questions and Answers ABOUT FOODS AND CANCER PREVENTION AND SURVIVAL

QUESTION: Are there any dietary factors that can help reduce the risk of lung cancer?

ANSWER: Of course, it is essential to avoid tobacco. However, diet may play
a role, too. A study published in 2000 suggested that isothiocyanates and
other natural chemicals in broccoli, bok choy, cabbage, and other cruciferous
vegetables may reduce lung cancer risk.22 Of 18,000 men studied, those
with detectable isothiocyanates in their blood had a 36 percent lower
chance of developing lung cancer compared to those with none.
Food sources of these compounds are far preferable to supplements. In
fact, beta-carotene taken in doses higher than those which occur naturally
in plant foods can actually increase cancer risk. The lesson is simple: vegetables
and fruits should be a generous part of the diet.