Everyone's mailing in stool samples for a gut report, but can an at-home microbiome test actually tell you anything?

At-home microbiome tests are having a moment. You mail in a stool sample and get back a report on your gut bacteria, along with personalized claims about your diet, weight, mood and even longevity.

Dozens of at-home testing companies claim that they can analyze the bacteria, fungi and other microbes in your stool to create a snapshot of your gut microbiome — the community of trillions of ...

At-home gut health tests use DNA or RNA sequencing from a stool sample. Testing your gut health cannot replace an official diagnosis from a doctor. Your results may provide insights into gut ...