SLC27A5 and overnutrition: When various factors, such as overnutrition and high-fat diet (HFD), cause an increase in FFA levels in the body, the upregulation of cluster of differentiation 36 (CD36), fatty acid transport protein 2 (FATP2), and fatty acid transport protein 5 (FATP5), which are lipid transporters in the liver cell membrane, increases the influx of FFAs into the liver [5,6].