A recent study by researchers at the University of Southern California (USC) indicates that diets rich in fruits, vegetables, and whole grains may be linked to an increased risk of lung cancer in young non-smokers. The research, presented at the American Association for Cancer Research's 2026 annual meeting, analyzed dietary habits and demographic data of 187 patients diagnosed with lung cancer at age 50 or younger. The findings suggest that the issue lies not in the produce itself but in the pesticide residues found on conventionally grown crops. Jorge Nieva, MD, leading the study, noted that these pesticides might contribute to the disease's association, especially since agricultural workers exposed to these chemicals show higher lung cancer rates. The participants in the study averaged a Healthy Eating Index score of 65, significantly above the US average of 57, indicating their healthier eating habits. The study emphasizes the need for further research into why lung cancer rates are rising among non-smokers, particularly women, and how dietary factors may play a role.