Myths vs facts: Leaky Gut Test and longevity

The concept of 'leaky gut' (increased intestinal permeability) is not a standard medical diagnosis. No home stool test, including the MyBody-X gut microbiome test, can measure leaky gut. The test only analyzes bacterial composition, not the integrity of the gut barrier. Claims that such a test can provide insights into longevity are unsupported by evidence. There are no validated stool biomarkers directly linked to human lifespan. The evidence for these tests is based on marketing, not rigorous clinical studies. If you suspect intestinal permeability issues, consult a gastroenterologist who may use established methods like the lactulose-mannitol test or serum zonulin – though even these remain debated. For longevity, proven factors like diet, exercise, sleep, and stress management are far more impactful than an unvalidated stool test.