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Surprising gut discovery reveals a hidden trigger of diabetes and liver disease

Scientists in Canada have uncovered a surprising culprit behind high blood sugar and liver problems: a hidden fuel made by gut bacteria. This little-known molecule, called D-lactate, slips into the bloodstream and pushes the liver to make too much sugar and fat. By creating a simple “trap” that blocks the molecule in the gut, researchers saw big improvements in blood sugar, insulin resistance, and liver health in obese mice—without changing diet or weight. The discovery opens up a fresh way to fight diabetes and fatty liver disease by targeting the gut’s secret fuel before it can do harm.

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