Adiabetic patient has polydipsia. this means that she:

Having Poludipsia Mean that the patient is experiencing one of the initial symptoms of the onset of diabetes which is excessive thirst. When a person is suffering from this condition, they will also experience the dryness of the mouth along with the thirst, which is the result of fluid loss as well as when their blood sugar levels that are high. It is also very common in people who are diabetic but have not been diagnosed.

If you eat to much it could kill you.