A gastrointestinal doctor speaking to TODAY says the most effective gut health test is not one of the many trendy wellness products now flooding the market. Instead, the focus is on an established medical screening: colonoscopy, which the doctor says stands apart because it can identify important problems in the digestive tract and help catch disease early.

The report comes amid growing interest in gut health, a space often dominated by supplements, at-home kits and marketing around microbiome optimization. While everyday habits such as eating fiber, staying hydrated and walking regularly can support digestive health, the article suggests that evidence-based screening remains far more valuable than many consumer-focused tests.

What makes colonoscopy especially important is its practical role in prevention and detection. Rather than simply offering data points, the screening can reveal abnormalities that may require follow-up care. That makes it a more meaningful tool for long-term gut health than tests that promise broad insights without clear medical benefit.

The takeaway from the TODAY piece is that proven medical screening should not be overshadowed by wellness trends. For people thinking seriously about digestive health, the doctor’s advice points back to a test with a strong clinical track record and the potential to make a real difference.