Plant‐Based Diet Quality and Gastric Cancer Risk: A Case–Control Study in High‐Risk Regions of Fujian Province, China

< 0.001). Subgroup analyses suggested that the inverse associations of PDI and hPDI with GC risk were more pronounced among smokers and individuals reporting low life stress, while the positive association of uPDI with GC risk appeared stronger in younger and married participants. Greater adherence to overall and healthy plant-based diet patterns was associated with a lower risk of GC, whereas higher adherence to unhealthy plant-based patterns was associated with a higher risk. These findings suggest that promoting higher-quality plant-based eating habits may be beneficial for GC prevention, particularly in high-risk populations.