Interestingly, hepatic Ces2c deficiency promotes liver steatosis (7) whereas loss of hepatic Ces1d (formerly called Ces3/triglyceride hydrolase [TGH]) increases hepatic TG accumulation in chow-fed mice but has no effect on hepatic steatosis in Western diet–fed mice due to its role in fatty acid oxidation (FAO) and VLDL secretion (8). This evidence concerns the gene CES3 and fatty liver disease.