Obesity and "Sick Fat" otherwise known in medical terms as Adiposopathy increases the risk of many cancers.  Click on the following links to learn more.  Treating a person's excess body weight will improve overall health and quality of life.

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

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