Not all medical side effects are scary. A man who had brain surgery in Brighton, England, came home to find that he had been unexpectedly cured of his extreme arachnophobia. The patient was suffering from seizures related to a rare condition called sarcoidosis, and his doctors had decided to remove his damaged left amygdala. After the surgery, the man realized that he was fascinated rather than terrified of spiders—he would happily pick up the same tiny creatures he used to try to smash with tennis balls, New Scientist reported in October. The doctors think this might be because the amygdala (seen in red above) is linked to emotions, and cutting out the left section removed the man’s panic response.