Secondary bile acids are formed in the colon through bacterial transformation of primary bile acids originally synthesized in the liver. While they play roles in digestion and microbial regulation, elevated levels may indicate dysbiosis, excessive fat consumption, or altered bile acid metabolism. Some secondary bile acids, such as deoxycholic acid (DCA) and lithocholic acid (LCA), have been linked to mucosal irritation, inflammation, and a higher risk of colorectal disorders when persistently elevated. Measuring them in stool helps evaluate gut microbial activity and bile detoxification status.
They are bile acids produced by intestinal bacteria from primary bile acids that are originally formed in the liver.
To assess microbial activity, fat digestion, and possible mucosal effects associated with bile acid transformation.
It can indicate dysbiosis, high fat intake, or slowed intestinal transit, and may contribute to gut inflammation.
Not necessarily. In small amounts they help with digestion, but persistently high levels can cause irritation or promote inflammation.
Diet (especially fat and fiber), microbial composition, and bile acid recycling efficiency all influence this process.