A new patient is in your office for a routine physical. He informs you that he has a genetic disease. Upon questioning he tells you that it was identified at birth and its complications were minimized with a specific diet. He asks if it is okay to drink diet soda drinks. You advise him against consuming foods containing aspartame. You do this because he has what disease?
A) Lupus erythematosus
B) Type I diabetes mellitus
C) Maple syrup urine disease
D) Phenylketonuria
E) Alkaptonuria
