For most people, the ketones that form as a normal product of fat burning and weight loss are nothing to be concerned about because they are simply burned for energy by the body, and any excess are passed out of the body in the urine.f you are losing weight, you may have a small amount of ketones in your urine. This is OK for people with Type 2 diabetes, as long as their blood glucose level is in a normal range, but people with Type 1 diabetes should check with their doctor.