DURHAM, N.H.—Friendship can be one of the keys to staying heathier later in life — that was one of the key findings from new research at the University of New Hampshire that took a closer look into the growing public health concern of loneliness. The study found that older adults without children are more vulnerable to loneliness, but good friends helped fill that void.   

“Social connection is incredibly important. It’s linked to both physical and mental health outcomes,” said Alison Rataj, research scientist at UNH’s Institute for Health Policy and Practice and Center on Aging and Community Living. “Loneliness is kind of a silent killer, that’s why we need to recognize it, talk about it and find ways to remedy it.”  

In the study, recently published in the journal The Gerontologist, Rataj and her co-authors analyzed national data from the Health and Retirement Study, a long-running survey that tracks thousands of Americans age 50 and older. They examined responses from more than 11,000 participants who answered questions about loneliness, friendship quality and family structure, including how often they felt lonely and how much support or strain they experienced in their friendships.   

Older adults without children were consistently lonelier, averaging 1.62 on a standardized loneliness scale compared with 1.52 for those with at least one child. Yet when childless adults had strong, supportive friendships, their loneliness dropped by roughly 20% more than it did for parents with similar friend support. Childless adults also reported slightly higher overall friend support — 3.16 versus 3.05 on a four-point scale — suggesting they may invest more in friendships.   

Rataj said that this is increasingly important as we head into the holidays when loneliness can increase due to many different factors including physical distance from loved ones, physical limitations or grief from lost loved ones.

“The holidays tend to be a time where togetherness is emphasized, so feelings of loneliness can be intensified especially for those who don't have a strong social support system or are unable to connect with their loved ones,” said Rataj.

The study also found that marital status had a significant impact. Adults who were divorced, widowed, separated or never married reported higher loneliness than those who were married. 

“You might have children, but you also might have close friends, a spouse or other meaningful ties,” said Rataj. “It’s not one-size-fits-all; loneliness can be eased through many different connections.”  

The researchers said the study was partially motivated by current demographic shifts like declining fertility rates and the growing number of people without children living longer.   

“Many in the Silent Generation (born between 1928 and 1945) tended to have larger families and more traditional lifestyles — long marriages, children and clearly defined family roles,” said Rataj. “The Baby Boomers (born between 1946 and 1964) and younger generations, though, are redefining what family looks like. We’re seeing more blended families, cohabitation without marriage and strong friendship networks or ‘chosen families,’ especially within LGBTQ+ communities. It’ll be fascinating to see how these changing dynamics shape loneliness as these cohorts age.”   

Research into loneliness is important on multiple fronts, including informing social programming that could help older adults. The researchers said programs that bring people together, whether through volunteering or community events, can make a real difference. That is especially relevant in a state like New Hampshire, which has one of the oldest demographics.  

“In New Hampshire, we have some challenges with transportation for older adults,” said Rataj. “Not everyone can just hop in a car and go somewhere, so it’s important to create opportunities in places they already visit, like libraries, senior centers or even online. Many older adults are tech-savvy and connected, so offering ways to build friendships through those channels can also have a big impact on their social health."  

Study co-authors include Andrew Alberth, Elisabeth J. Stam and Jeffrey E. Stokes all of the University of Massachusetts Boston and Yan-Jhu Su of Pennsylvania State University.

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