In Type 1 diabetes, the pancreas cannot produce insulin, causing glucose to remain in the bloodstream instead of entering cells. Cells are starved of energy, triggering persistent hunger signals despite adequate food intake.

Insulin resistance in Type 2 diabetes means cells do not respond properly to insulin. Despite high blood glucose levels, cells cannot effectively absorb glucose, leading to increased hunger as the body seeks more energy.

An overactive thyroid gland increases metabolism and energy expenditure. The resulting higher calorie burn triggers increased appetite as the body attempts to meet elevated energy demands.

Low blood sugar levels stimulate the release of hunger hormones and activate the appetite center in the hypothalamus, creating an intense urge to eat to raise blood glucose levels.

Excess cortisol levels increase appetite and promote fat accumulation, particularly in the face and abdomen. The hormonal imbalance disrupts normal satiety signals.

Hormonal fluctuations during the menstrual cycle, particularly changes in estrogen and progesterone, can increase appetite and food cravings in the luteal phase.

Chronic stress triggers cortisol release, which can increase appetite. Emotional eating becomes a coping mechanism, leading to excessive food intake.

Some medications like corticosteroids, antipsychotics, antidepressants, and certain diabetes medications can stimulate appetite as a side effect.

Lack of sleep disrupts hormones that regulate hunger (ghrelin increases, leptin decreases), leading to increased appetite and cravings for high-calorie foods.

This eating disorder involves recurring episodes of eating large amounts of food quickly, often to the point of discomfort. Loss of control over eating is a key feature.