#1: Researchers surveyed 563 people with multiple sclerosis, assessing how closely they followed the Mediterranean diet, and testing their mental function, three times as many people who did not eat a Mediterranean diet suffered from cognitive impairment versus those who did follow the diet.

#2: Researchers studied the brains of 581 people who donated their bodies to scientific research after they died; all donors had completed at least 7 years of health and diet records before they passed away. Results: the brains of participants who most closely followed the Mediterranean diet had fewer plaques and tangles (associated with Alzheimer’s), and their brains were similar to people at least 18 years younger versus people who didn’t follow a Mediterranean diet.