Acetone is weird, it’s produced in our bodies and processed with normal metabolic processes. But 5kg still seems like a lot!

Acetone is produced and disposed of in the human body through normal metabolic processes. Small quantities of it are present naturally in blood and urine. People with diabetic ketoacidosis produce it in larger amounts. Medical ketogenic diets that increase ketone bodies (acetone, β-hydroxybutyric acid and acetoacetic acid) in the blood are used to suppress epileptic attacks in children with treatment-resistant epilepsy.[29]