Non-celiac gluten sensitivity (NCGS) is a condition where individuals experience symptoms related to gluten consumption, despite not having celiac disease or wheat allergy. Symptoms can include abdominal pain, bloating, fatigue, and headaches, which improve when gluten is removed from the diet. Unlike celiac disease, NCGS does not cause damage to the small intestine. The exact cause of NCGS is still unclear, and diagnosis typically involves ruling out other conditions. People with NCGS often find relief by following a gluten-free diet, but it is important to consult a healthcare professional for proper guidance.