Final answer:
Glucosuria, the presence of glucose in the urine, can be caused by diabetes, high carbohydrate diets causing insulin resistance, and stress-induced cortisol production.
Step-by-step explanation:
Glucosuria, the presence of glucose in the urine, can be caused by a variety of factors. These include diabetes (elevated glucose levels), high carbohydrate diets causing insulin resistance, and stress-induced cortisol production. When glucose levels in the blood exceed the renal threshold for glucose, which is typically around 180 mg/100 ml of blood, the kidneys begin to excrete glucose in the urine, resulting in glucosuria.