Hypoglycemia:

During a hypoglycemic episode, you sometimes “loosen the reins” and raid every stash of sweets at home. You watch yourself with a kind of astonishment as this almost instinctive craving for sugar takes over—so sharply contrasting with your usual, deeply ingrained restraint. In a way, it serves as a reminder that a very different kind of behavior is, in principle, also part of you.

Since, in my personal case, hypoglycemia only occurs every six to twelve months, it hardly matters—if anything, it’s just an oddly fascinating experience.