Indole-3-acetic acid is a tryptophan-derived metabolite produced by intestinal bacteria. It contributes to gut–liver communication and can affect oxidative stress and intestinal permeability. Elevated levels of IAA may indicate dysbiosis, increased bacterial tryptophan metabolism, or altered liver detoxification pathways. Normal concentrations suggest a balanced gut microbiota activity and efficient metabolic clearance.
High IAA levels may suggest an imbalance in gut microbes, excessive bacterial metabolism of tryptophan, or decreased efficiency of liver detoxification. Elevated levels can sometimes be associated with oxidative stress or increased intestinal permeability.
Testing IAA can provide valuable insights for individuals experiencing gut-related symptoms like bloating or food sensitivities, as well as for those suspected of having liver overload. It can also be helpful in evaluating tryptophan metabolism in people suffering from fatigue, inflammation, or metabolic imbalances.
IAA is produced by intestinal bacteria from dietary tryptophan. Its levels depend on microbial diversity, diet composition, and liver function. Dysbiosis, poor digestion, or impaired detoxification can all elevate IAA.
Yes. Supporting a balanced gut microbiota through prebiotic fibres, antioxidants, and reduced exposure to toxins can help regulate IAA production. Promoting liver detoxification and maintaining a nutrient-dense, anti-inflammatory diet also support healthy levels.