Close friends linked to a sharper memory

Maintaining positive, warm and trusting friendships might be the key to a slower decline in memory and cognitive functioning, according to a new Northwestern Medicine study. SuperAgers — who are 80 years of age and older who have cognitive ability at least as good as people in their 50s or 60s — reported having more satisfying, high-quality relationships compared to their cognitively average, same-age peers, the study reports.