Kyoto University study: Olive oil before carbs may reduce blood sugar spikes in mice

A Kyoto University study published October 8, 2026, found that giving mice olive oil before glucose slowed gastric emptying and reduced early blood sugar spikes, suggesting meal order may impact glucose regulation, though human testing is still needed. Researchers observed this effect in normal mice, type 2 diabetic mice, and those with severe insulin impairment. The response involved coordinated hormone and nerve signals, not just slower digestion, indicating a complex interaction between the gut, pancreas, and nervous system. The findings offer a possible mechanism for fat-before-carbohydrate meal sequencing but do not prove clinical benefit for people. Experts stress diabetic patients should maintain current treatments and dietary advice, as human trials are required before any practical recommendations emerge.