Hormonal
In obese individuals, systemic inflammation drives a shift in tryptophan metabolism toward the kynurenine pathway (increased KYN/TRP ratio) and away from serotonin and microbial indole production, correlating with higher inflammatory markers.
This research highlights that obesity is linked to specific changes in how your body processes tryptophan, shifting it away from serotonin production and toward inflammatory pathways. While this paper does not offer a direct intervention, it suggests that managing systemic inflammation and gut health (via diet and lifestyle) may be key to normalizing these metabolic pathways.
Both KYN and microbiota-mediated indole routes of TRP metabolism were altered in obese subjects, as reflected in higher KYN/TRP ratio and lower 5-HT and indoles levels, relatively to non-obese controls. HsIL-6 and hsCRP were increased in obesity and were overall associated with TRP metabolic pathways alterations.
Why this rating
Observational study with a reasonable sample size (n=127) and specific biochemical assays, but lacks causal intervention data.
Source
Tryptophan Metabolic Pathways Are Altered in Obesity and Are Associated With Systemic Inflammation
Sofia Cussotto et al. · Frontiers in Immunology · 2020
DOI 10.3389/fimmu.2020.00557
Related findings · Hormonal
- Initial treatment for type 2 diabetes should be a combination of metformin and either an SGLT-2 inhibitor or a GLP-1 receptor agonist to achieve cardiorenal protection, rather than monotherapy or older agents like sulfonylureas.Strong
- For patients with specific monogenic obesity syndromes (leptin deficiency, POMC/PCSK1/LEPR mutations), targeted pharmacotherapy (recombinant leptin or setmelanotide) is highly effective and should be prioritized, unlike in polygenic obesity.Strong
- Continued weekly administration of 2.4 mg subcutaneous semaglutide prevents weight regain and promotes further weight loss in adults with overweight or obesity, whereas switching to placebo results in significant weight regain.Strong
This is one finding among thousands. Every one is graded and traced to its source, so you can see what the evidence actually supports. Browse the research →