Seeds? Spoiler Warning
Through the film we see Enrique saving the seeds from the food he is eating. At the end Marc and Julia have a nice garden growing in the doctors office.
So are they living off of poppies and sesames? Also, wasn't everything Enrique eating baked? That would have killed the seeds. Did he have sense enough to save the tomato seeds from his salad the first day he was unable to leave the office?