What makes insulin stop working? scientists investigate healthy people

This study looks at why some healthy adults develop insulin resistance, a condition where the body doesn't use insulin well. Researchers will ask 80 participants to either reduce physical activity for 14 days or eat a high-fat diet for 3 days. They will then measure changes in insulin sensitivity and look at blood and tissue samples to find molecular clues. The goal is to better understand how lifestyle and biology interact, not to test a treatment.