Having increased thirst and frequent urination can be a symptom of having higher than normal blood sugar level (i.e. diabetes mellitus). Diabetes mellitus is the most common medical cause of increased thirst and frequent urination. It is caused by insufficient production of insulin from the pancreas and inability of the body to use insulin properly.
Other symptoms of diabetes mellitus may include:
- Tiredness or fatigue
- Blurred vision
- Unexplained weight loss
- Having more frequent infections
- Having slow-healing cuts and sores
The fact that both your parents have type 2 diabetes puts you at risk of developing diabetes. If you are overweight or obese, your risk for diabetes is increased as well.
You should see a doctor to do blood test to confirm whether you have or do not have diabetes.