Following are the common risk factors of gastric cancer: - H. pylori infection - obesity - smoking - history of gastric cancer - history of gastric surgery - low-socioeconomic status in case of body and distal part cancer - high-socioeconomic status in case of cancer in proximal parts - intestinal metaplasia - gastric atrophy - diet high in processed foods - pernicious anemia Reference: Bailey and Love's Short Practice of Surgery Image via: https://www.thelancet.com/journals/lanonc/article/PIIS1470-2045(08)70072-X/references