Keep Stress Low By Making And Maintaining Close Friendships

Written by Jim Folk
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Written by Jim Folk
Written by Jim Folk
Last updated July 6, 2021
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Numerous studies over the years have found making and maintaining close social relationships can help keep stress low.

That makes sense because humans thrive with healthy and supportive relationships. Those who have long-term healthy relationships fare better overall than those who don’t.[1]

A study by the Beckman Institute For Advanced Science And Technology confirms previous research. It found that communicating with female friends decreases stress hormone levels for women across the lifespan.

For good mental health and a reduction in stress, develop healthy friendships and maintain them for life. They are more important than many people realize.

You can read the press release for this research below:

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Keep your friends close, cortisol levels low for life

BECKMAN INSTITUTE FOR ADVANCED SCIENCE AND TECHNOLOGY

Directing a meeting, dialing up an old acquaintance, dictating the perfect tuna salad sandwich across a drive-through window. For business and for pleasure, human beings are in constant communication.

Our proclivity for socialization is lifelong, equally prominent in the lives of adolescents and adults. A recent study determined key differences in the ways that various age groups communicate, as well as one conversational component that stands the test of time: friendship. Specifically, bonds between individuals who identify as female.

Led by former Beckman Institute postdoctoral researchers Michelle Rodrigues and Si On Yoon, an interdisciplinary team evaluated how interlocutors’ age and familiarity with one another impacts a conversation, reviewing the interaction’s overall effectiveness and stress responses generated as a result.

The study, titled “What are friends for? The impact of friendship on communicative efficiency and cortisol response during collaborative problem solving among younger and older women,” was published in the Journal of Women and Aging in May 2021.

Two hypotheses form the foundation of this female-focused study. First, the tend-and-befriend hypothesis, which challenges the traditionally masculine “fight-or-flight” dichotomy.

“Women have evolved an alternative mechanism in response to stress,” said Rodrigues, who is currently an assistant professor in the Department of Social and Cultural Sciences at Marquette University. “In order to deal with stress, women can befriend female peers.”

The team also tested the socio-emotional selectivity hypothesis, which postulates a social “pruning” as humans advance in age and pursue more intimate, higher-quality circles of friends.

The introduction of age as a variable is novel in the field and stems from an interdisciplinary Beckman collaboration.

“I was working with several different groups in several different disciplines, coming from the perspective of studying friendship but having previously done research on adolescent girls, but not older women,” Rodrigues said.

She combined forces with then-Beckman-postdoc Si On Yoon, who was studying the cognitive mechanisms of natural conversation across the lifespan, including healthy younger and older adults.

“My research program was focused on language measures in social interactions, and I was glad to work with Dr. Rodrigues to develop an integrative approach including both language processing and physiological measures to study social interactions,” said Yoon, who is currently an assistant professor in the Department of Communication Sciences and Disorders at the University of Iowa.

The interdisciplinary team merged both theories into a single query: Across women’s lifespans, how are the tendencies to “tend and befriend” as well as socially select reflected in their communication?

They tested a pool of 32 women: 16 “older adults” aged 62-79, and 16 “younger adults” aged 18-25. Each participant was either paired with a friend (a “familiar” conversation partner) or a stranger (“unfamiliar”).

The partnerships underwent a series of conversational challenges, wherein the participant instructed her partner to arrange a set of tangrams in an order that only the former could see. The catch? Each shape was abstract, their appearances purposefully difficult to describe.

“You could look at one [tangram] and say, ‘This looks like a dog.’ Or, you could say, ‘This looks like a triangle, with a stop sign, and a bicycle wheel,'” Rodrigues said.

This exercise helped quantify each conversation’s efficiency: partners who achieved the desired tangram arrangement in fewer words were considered more efficient, and pairs who needed more words to complete the task were considered less efficient.

The researchers found that while the younger adult pairs communicated more efficiently with familiar partners than their older counterparts, they communicated less efficiently with unfamiliar partners; alternatively, the older adults demonstrated conversational dexterity, quickly articulating the abstract tangrams to friends and strangers alike.

“A referential communication task like this requires that you see where the other person is coming from. It seems like the younger adults are a little more hesitant in trying to do that, whereas the older adults have an easier time doing that with strangers,” Rodrigues said.

This was not predicted based on the socio-emotional selectivity hypothesis, which anticipated a correlation between age and social isolation.

“Even though older adults choose to spend more time with people who matter to them, it’s clear that they have the social skills to interact with unfamiliar people if and when they choose to,” Rodrigues said.

Rodrigues’ team also measured salivary cortisol to quantify and compare participants’ stress levels throughout the testing process.

“When you experience something stressful, if you have a stress response system that’s working as it should, the result is an elevated amount of cortisol, our primary stress hormone, which then tells our bodies to release glucose into our bloodstreams,” she said. “That’s reflected in our saliva about 15 to 20 minutes after we experience it. If we see a rise in salivary cortisol from an individual’s baseline levels, that indicates that they are more stressed than they were at the time of the earlier measurements.”

Across both age groups, those working with familiar partners had consistently lower cortisol levels than those working with unfamiliar partners.

“A lot of the research on the tend-and-befriend hypothesis has only focused on young women, so it’s great to have these results that pull that out to the end of life. We can see that friendship has that same effect throughout the lifespan. Familiar partners and friendship buffer stress, and that’s preserved with age,” Rodrigues said.


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The combination of good self-help information and working with an experienced anxiety disorder therapist, coach, or counselor is the most effective way to address anxiety and its many symptoms. Until the core causes of anxiety are addressed – which we call the underlying factors of anxiety – a struggle with anxiety unwellness can return again and again. Dealing with the underlying factors of anxiety is the best way to address problematic anxiety.

Additional Resources

anxietycentre.com: Information, support, and coaching/counseling/therapy for problematic anxiety and its sensations and symptoms, including Keep Stress Low By Making And Maintaining Close Friendships.

References

1. Umbersom, Debra, and Karas Montez, Jennifer. "Social Relationships and Health: A Flashpoint for Health Policy." Journal of Health and Social Behavior. 2010, https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3150158/