As we age, our brains shrink, a condition linked to cognitive impairment. According to a study from Columbia University, a healthy diet can help reduce such occurrences. The researchers studied 674 adults with an average age of 80. They were divided into two groups, depending upon their diets, and given magnetic resonance imaging scans to measure total brain volume and thickness. It was found that those following diets that most closely resembled the Mediterranean diet—less meat and more vegetables and fish—had larger brain sizes with less shrinking. The researchers equated the average size difference between the groups to about five years of aging.

Dr. Yian Gu, a neuropsychology professor at Columbia University, says, “This is another study consistent with previous studies that indicate the Mediterranean diet is an overall healthy diet.”