Bile acid transporters are proteins responsible for the movement of bile acids across cell membranes in the liver, intestine, and other tissues. These transporters play a crucial role in the enterohepatic circulation of bile acids, which is essential for the digestion and absorption of fats and fat-soluble vitamins. Research in this area focuses on understanding the physiological and pathophysiological roles of bile acid transporters, as well as their potential as therapeutic targets for various liver and metabolic disorders. This includes studies on the regulation of bile acid transporter expression and activity, their interactions with other signaling molecules, and the impact of genetic variations on their function. Furthermore, researchers are also exploring the development of pharmacological agents that target bile acid transporters to modulate bile acid levels and prevent or treat conditions such as cholestasis, non-alcoholic fatty liver disease, and metabolic syndrome. Overall, the investigation of bile acid transporters is critical for advancing our understanding of bile acid homeostasis and its implications for human health.