Medical News Today, Dec. 1, 2008 Bariatric surgery to reduce a person's weight also seems to treat nonalcoholic fatty liver disease. UTMB's Dr. Gagan K. Sood, lead author of a study, said, "Our team assessed and quantified this effect and found encouraging news: a majority of patients experience complete resolution of NAFLD after bariatric surgery, and the risk of progression of inflammatory changes and fibrosis seems to be minimal."