A new study released in Cancer Research suggests that eating a high-fat diet may increase risk of lung cancer.   The study shows that a high fat diet promoted tumorigenesis in two mouse models of lung cancer with  K-ras mutations ,which were identified in about 25% cases of lung cancer.   Researchers speculate that high fat diet promotes lung cancer by increasing systemic IGF-1, which is known to promote cancer growth. (David Liu)Jeffrey Norris, Krista Pearman, Regan Memmott, Kristin Lastwika, Joell Gills, Phillip Dennis. A high-fat diet promotes tumorigenesis in two mouse models of K-ras-driven lung cancer. [abstract]. In: Proceedings of the 107th Annual Meeting of the American Association for Cancer Research; 2016 Apr 16-20; New Orleans, LA. Philadelphia (PA): AACR; Cancer Res 2016;76(14 Suppl):Abstract nr 4330.