Lifestyle • Updated 2025-01-01
Sleep and glucose
Short sleep duration and irregular sleep timing reduce insulin sensitivity and increase hunger signaling even in healthy adults.
Mechanisms that matter
Hormonal
Insulin resistance
Sleep restriction reduces insulin sensitivity independent of calorie intake.
Behavioral
Appetite dysregulation
Poor sleep increases hunger and preference for energy dense foods.
Circadian
Late eating
Eating late misaligns glucose handling with circadian insulin sensitivity.
Highest impact fixes
Fixed wake time, morning light exposure, and reduced late night eating outperform sleep supplements for most people.