How does skipping meals affect your metabolism over time?

Skipping meals occasionally has minimal long-term metabolic impact, but doing it regularly can cause your body to adapt in ways that work against you. When you consistently skip meals, your body may lower its basal metabolic rate to conserve energy, meaning you burn fewer calories at rest. This is sometimes called metabolic adaptation or "starvation mode," though it's more gradual than that term implies. Over time, irregular eating can also disrupt hunger hormones like ghrelin and leptin, making it harder to recognize true hunger and fullness cues. This often leads to overeating later in the day. Muscle loss can also occur if calorie intake stays too low for too long, which further reduces metabolic rate since muscle tissue burns more calories than fat.