Answer:
Ketonuria is a serious condition characterized by the presence of ketones in the urine. This is caused due to dietary conditions such as starvation, vomiting, anorexia; and diabetes.
When the body is unable to use carbohydrates as the energy source or due to lack of carbohydrates, the body uses fats as the source of energy, thereby producing excessive ketones, which can be detected in the urine.