ultra-processed foods and stomach cancer: understanding dietary risks and prevention

gastric cancer stomach oncology tumor metastasis adenocarcinoma mutation inflammation helicobacter pylori dysplasia barrett esophagus ulcer gastritis processed food carcinogen nitrosamines acrylamide obesity diabetes insulin resistance hyperglycemia oxidative stress inflammatory cytokines microbiome epigenetics dna damage chemotherapy immunotherapy biomarkers diet nutrition fats sugars additives preservatives antioxidants fiber phytochemicals prevention junkfood ultra