Kynurenine metabolism is the process by which the amino acid tryptophan is converted into kynurenine and its downstream metabolites in the body. This pathway is important for regulating the immune response, inflammation, and neurotransmitter production. Dysregulation of kynurenine metabolism has been implicated in various diseases, including autoimmune disorders, neurodegenerative diseases, and psychiatric conditions. Research in this area aims to better understand the role of kynurenine metabolism in health and disease, as well as to develop potential therapeutic targets for these conditions.