Obesity is associated with increased risk of cancer, including endometrial, esophageal, gastric, kidney, colorectal, liver, gallbladder, pancreas, prostate, postmenopausal breast, ovarian, and thyroid cancers. Overweight and obesity account for approximately 10% of new cancer diagnoses annually in the US and up to 50% of certain cancers such as endometrial and hepatobiliary cancer.

https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3476838/

https://www.cancer.gov/about-cancer/causes-prevention/risk/obesity/obesity-fact-sheet