By Hugo Francisco de Souza Reviewed by Susha Cheriyedath, M.Sc. Jun 17 2026 A sweeping analysis of 1.5 million cancer cases shows that excess body weight may shape cancer risk more broadly than previously recognized, with risks varying by cancer type, sex, and region. Study: Adiposity and cancer: systematic review and meta-analysis . Image Credit: Piyawat Nandeenopparit / Shutterstock In a recent systematic review and meta-analysis published in the journal  Nature Metabolism , researchers