Is excessive thirst a symptom of type 2 diabetes mellitus?
Yes, excessive thirst (polydipsia) is a common symptom of type 2 diabetes mellitus. It occurs because high blood sugar levels cause the kidneys to excrete more glucose in the urine, which pulls water out of the body. This fluid loss leads to dehydration and makes you feel very thirsty. Other associated symptoms may include frequent urination, fatigue, unexplained weight loss, and blurred vision.