Close relationships with family and friends bring several benefits, including happiness, reduced risk of developing depression and, according to Dr. Brendan Kelley, a neurologist at The Ohio State University Wexner Medical Center, a reduced risk of cognitive decline. Studies done in countries around the world have shown that those with “greater social connectedness” who “report higher quality of social interactions” are far more likely to “maintain brain health and decrease their risk of cognitive decline later in life.”