were not eldest among his/her siblings had an increased risk of GCs in the distal and middle thirds, and their ORs were 1.7 (95% CI 1.0-2.8)and 1.9 (95% CI 0.8-4.3),respectively.The corresponding OR in the upper third stomach was 0.3 (95% CI 0.1-0.9).The differences of those three ORs were statistically significant (P = 0.010). CONCLUSION:The present study shows that birth order, salt intake, consumption of fruits and vegetables, the type of cooking, and cigarette smoking are related to GC risk.In histology and tumor-location specific analyses, non-eldest person among their siblings is related to an increased GC risk in the distal and middle thirds of the stomach, and is related to a decreased GC risk in the cardia.