Harvard biologist Courtney Peterson asserts that insufficient sleep has a more detrimental impact on blood sugar control than poor diet or a sedentary lifestyle. Peterson’s research highlights sleep as a critical factor in glucose regulation, potentially surpassing dietary choices in its influence. She indicates that consistently getting too little sleep can rapidly worsen blood sugar levels. The biologist also discussed the benefits of intermittent fasting, though emphasized sleep’s primary importance. This finding challenges conventional wisdom often focused on diet and exercise as the main determinants of metabolic health. Peterson’s work suggests prioritizing sleep as a fundamental component of maintaining healthy blood sugar levels. Further research is expected to explore the specific mechanisms linking sleep deprivation to glucose dysregulation.