As a self avowed loner, this research showing personal connections are important to a long life bothers me. I had hoped that Cacioppo’s writing in Loneliness that we each have differing levels of engagement that are necessary would apply. Having a lower threshold might protect against depression, anxiety, and suicide that plague men.
Pinker seems to be saying that having someone who will check up on older people is what prolongs their lives into becoming centenarians.
If the above does not work, then try TED Talk: The secret to living longer may be your social life.