GIP and metabolic dysfunction-associated steatohepatitis: In a more recent study, Kannt A. et al. showed that mice that were placed on a specific diet, which led to non-alcoholic steatohepatitis and liver fibrosis, for 36 weeks lost 8% to 9% of their diet-induced body weight after 8 weeks of treatment with the combination of glucagon, GLP-1, and GIP.