Add Yahoo as a preferred source to see more of our stories on Google. This photo provided by Tiny Health in October 2025 shows the company's swab for their gut health test. (Tiny Health via AP) ...

Virtually every aspect of your health can be traced back to your microbiome. But some tests are better than others.

The human gut is home to trillions of beneficial microbes that play a crucial role in health. Disruptions in this delicate ...

Spruiked by online influencers as a way of gaining insight into our health, experts say at-home tests oversimplify complex factors and can cause unnecessary distress ...

We asked doctors to explain the latest research.

At-home gut microbiome tests are trending, selling insights to the curious, empowerment to the chronically ill and a claimed path to longevity to the wellness-conscious. Private companies are offering ...