Death in the dining hall. (Death.)
At the end of his first day of exploration, the Doctor finally found his way into the dining hall. Inside the cafeteria, he quickly discovered that there were benefits to being 'mad' - he could ask for strange flavor combinations without any back-talk or mockery from his dining companions. After loading a tray with a slice of pizza (pepperoni with strange green peppers), a bowl of lime gelatin, and baked beans, he found himself a seat at a table. There, he proceeded to alternate bites of each dish.
It wasn't good. The beans were tolerable, but the peppers on the pizza tasted like fire dipped in brine and the jiggle of the green gelatin was downright terrifying. He turned the dessert dish upside down on his tray so that he wouldn't have to watch the mess swaying gently every time his knee bumped the table. Then he devoted his attention to picking the jalapenos from what remained of the slice of pie.
The Doctor felt uncomfortable and a little off - a mix of fatigue left over from all of the medical staff's tampering with his body chemistry, combined with the not-entirely-appetizing food. He knew that he needed to eat something, but honestly. If this was the main diet of the residents, no wonder they were ill.