Episode Details

Tiny fish with big secrets: Stanford scientists tracking African turquoise killifish—living just 4-8 months—have uncovered that their behavior, like sleep and activity patterns, can predict lifespan. These fish don’t age slowly; they shift through distinct behavioral phases, each tied to biological changes in organs like the liver and heart. More consistent nighttime sleep and daytime activity correlate with longer lives, though causation isn’t proven yet. The team is now using AI to build “genomic clocks” to pinpoint aging transitions, turning these fleeting creatures into powerful tools for understanding—and possibly slowing—aging in humans.

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