Rumination disorder is a complex eating disorder characterized by the repeated regurgitation of food, followed by re-chewing, re-swallowing, or spitting it out. Unlike vomiting, this process isn't accompanied by nausea or gagging. Individuals with rumination disorder involuntarily bring previously swallowed food back into their mouth without any apparent physical cause. This condition often stems from a habitual response or learned behavior rather than a conscious decision. It commonly begins during infancy, adolescence, or early adulthood, and its exact cause remains uncertain, although psychological, physiological, and environmental factors may contribute. The disorder can lead to malnutrition, weight loss, dehydration, dental issues, and social isolation due to embarrassment or shame. Psychologically, individuals with rumination disorder may experience anxiety, depression, or other mental health concerns. Treatment typically involves a multidisciplinary approach, combining behavioral therapy, cognitive-behavioral therapy (CBT), nutritional counseling, and sometimes medication to address any underlying mental health conditions. Support from healthcare professionals, family, and friends plays a crucial role in managing and overcoming rumination disorder, aiming to improve both physical health and psychological well-being.