Key Takeaways

Researchers think they’ve figured out one reason metformin is an effective diabetes drug

Metformin alters the levels of certain metals in a person’s bloodstream

Those changes have been previously associated with better blood sugar tolerance

WEDNESDAY, Sept. 3, 2025 (HealthDay News) — The diabetes drug metformin has been a mystery for more than six decades.

The most prescribed diabetes med in the world, metformin is very effective in lowering blood sugar levels.

But no one knows exactly how it works.

But a new study sheds some light on metformin’s magic, potentially opening the door for development of even better diabetes drugs, researchers report.

At least some of the drug’s benefits appear to be tied to the way it affects blood levels of certain metals like coppe

See Full Page