08/31/2026
What if your gut could tell you something your birthday can't?
A new study out of the University of Hawaiʻi found that the mix of bacteria in your gut is linked to how fast your body is aging, biologically, not chronologically. Certain bacteria showed up more in people aging slower. Others showed up more in people aging faster.
The researchers point out that gut bacteria are highly responsive to lifestyle, diet, and environment, which means this is one more piece of aging that isn't entirely out of your hands.
It's still early research, and correlation isn't causation. But it's one more reason to pay attention to gut health as part of the bigger picture.
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Certain gut bacteria were linked to slower or faster biological aging.