Young non-smokers with lung cancer were found to have unusually healthy diets, raising questions about hidden risks tied to fruits, vegetables, and grains. Researchers suspect pesticides may play a role, but more evidence is needed. Credit: Shutterstock Eating plenty of fruits, vegetables and whole grains is widely recommended to improve health and reduce the risk of cancer and other diseases. But new findings from USC Norris Comprehensive Cancer Center, part of Keck Medicine of USC, suggest