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Night Eating Syndrome (NES) is a behavioral eating disorder marked by a delayed pattern of food intake, where a significant portion of daily calories is consumed during the evening or night. Individuals with NES often experience little appetite in the morning, increased hunger after dinner, and repeated episodes of waking up during the night to eat. Unlike occasional late-night snacking, this condition becomes a persistent pattern that affects physical health, emotional well-being, and sleep quality.

The exact cause of Night Eating Syndrome is not fully understood, but it is commonly associated with stress, anxiety, depression, disrupted circadian rhythms, and hormonal imbalances that regulate hunger and sleep. People with NES may feel unable to return to sleep without eating, creating a cycle that reinforces nighttime food consumption.

Common symptoms include insomnia, mood changes, morning anorexia, and excessive evening eating. Over time, NES can contribute to weight gain, obesity, metabolic disorders, and reduced quality of life. Diagnosis typically involves a detailed assessment of eating habits, sleep patterns, and psychological health.

Treatment may include cognitive behavioral therapy (CBT), stress management techniques, nutritional counseling, and improved sleep hygiene. Early intervention can help individuals regain healthy eating patterns, improve sleep, and support overall physical and mental wellness.