
Normal thirst occurs after exercise, heat, or salty foods and subsides after drinking water. However, persistent thirst unrelieved by fluids may signal diabetes. High blood sugar pulls fluid from tissues, increasing urination and causing dehydration. Diabetes-related thirst often accompanies frequent urination, fatigue, and unexplained weight loss. Thirst persisting throughout the day or disrupting sleep warrants medical consultation. Early recognition of these symptoms is important for health management.