Stop the presses: Ice cream makes you happy. Researchers in England say the chilly treat "lights up" the brain's pleasure zones. The study was funded by Unilever, which makes ice cream. Subjects ate 15 teaspoons of ice cream, while MRI technology watched their brains. Turns out, the orbitofrontal cortex — the "processing" area of the brain — responded immediately. And that's just from eating vanilla!