* In a study of 700 participants with varied incomes, social statuses, and family size, Dr. Robert Waldinger found that brain function declined sooner in those who were less satisfied in their relationships.
* A study of more than 3 million people over 20 years found that those who were not socially active increased their risk of mortality by 90%.
* Researchers at the University of Texas found consistent evidence that a low quality or amount of socializing contributes to the development and worsening of cardiovascular disease, repeat heart attacks, autoimmune disorders, high blood pressure, cancer, and slowed wound healing.
* The same researchers found that having a strong social circle reduces the damaging effects of stress on the brain. Whether it’s the sense of feeling loved, cared for, or listened to, they noted, close relationships improve mental health by fostering “a sense of meaning and purpose” in people’s lives.