Answer:Susan most likely have DIABETES MELLITUS.
Explanation: Diabetes Mellitus is common endocrine disorder accompanied by varying degrees of disruption of carbohydrate, protein and fat metabolism.
Diabetes Mellitus is caused by absence of, relative deficiency of/ resistance to the hormone INSULIN. It's signs and symptoms includes hyperglycemia ( increased blood sugar level), increased thirst( polydipsia), glucose in the urine(glucosuria), increased urination(polyuria), weight loss without trying, ketosis and ketoacidosis.
Causes include; Obesity, Sedentary lifestyle, Increasing age,genetic factors, autoimmune reactions, environmental factors including viral infections.