Tryptophan metabolism is the process by which the essential amino acid tryptophan is converted into various compounds within the body. Tryptophan is an important precursor for the synthesis of important molecules such as serotonin, melatonin, and niacin. The metabolism of tryptophan is regulated by several enzymes and pathways, which play a crucial role in maintaining overall health and functioning of the body. Dysfunction in tryptophan metabolism has been linked to various health conditions, including mood disorders, sleep disturbances, and immune system dysfunction. Research in this area aims to further understand the complex mechanisms involved in tryptophan metabolism and its implications for human health.