Bile acids / Bile salts

What does the classification of bile acids into primary and secondary bile acids mean?

Bile acids can be categorized into two types: primary bile acids, which are produced in the liver by human enzymes, and secondary bile acids, which are formed in the intestine through the action of bacterial enzymes.
Fiorucci et al. 2026 Trends in Immunology 47(6): 528

Which two functions do both primary and secondary bile acids perform?

Both primary and secondary bile acids are essential for bile secretion by hepatocytes and nutrient absorption in the intestine
Fiorucci et al. 2026 Trends in Immunology 47(6): 528

What is the sta…