Now, acetone cannot actually be metabolized by our bodies. So we do not use acetone to form any energy molecules. And what happens to acetone is it's simply released via the lungs, via breathing. And so physicians can actually test the breath of patients and they can detect high levels of acetone. And if that's the case, that implies that they have high levels of ketone bodies inside their body. Now, the other pathway that acetone, acetate can actually follow is an enzyme catalyzed pathway.