How Happy Relationships Lower Stress Hormones in Older Adults

Having a happy life with your partner improves your mood and helps you manage stress, especially when you get old ().

New research from the University of California studied how individual's emotional feelings and satisfaction in their relationships affected their cortisol level.

Researchers found that older couples with positive emotions had lower cortisol levels. This effect was even stronger in couples who were very satisfied with their relationships.

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How Positive Emotions Affect Stress Levels in Relationships

"Having positive emotions with your relationship partner can act as a social resource," said Tomiko Yoneda, an assistant professor of psychology at the College of Letters and Science and the study's lead author. The study was published in September in the journal Psychoneuroendocrinology.

Cortisol is an important part of our bodies' stress response and everyday function. Cortisol increases steeply when we wake up and then tends to decline gradually throughout the day. In acute stress, cortisol spikes, driving our bodies to produce the glucose and higher metabolism we might need for sudden action.

How we feel throughout the day affects our cortisol production. Studies have consistently found that negative emotions are linked to higher levels of cortisol, and chronically high levels of cortisol can lead to overall poorer health.

In old age, these links between our emotions and cortisol maybe even stronger. Older adults also tend to have stronger physiological responses to stress, but their bodies are less able to slow down their cortisol production. For older couples, intimate relationships might play a role in managing their cortisol levels, researchers said.

"Positive emotions can buffer the production of cortisol," said Yoneda. "This is especially relevant when we think about how our relationship partners might bolster that effect."

Partner's Happiness Reduces Stress Hormones in Older Adults

Yoneda and her research team analyzed data from 321 adults from 56 to 87 years of age across three intensive studies in Canada and Germany between 2012 and 2018. The analysis compared people's self-reported emotional states and their relationship satisfaction with levels of cortisol measured by saliva samples. In all three studies, people's emotional states and cortisol were measured multiple times each day for a full week.

The study found that a person's body produced less cortisol in moments when their partner reported higher positive emotions than usual. This effect was even stronger than when people reported their own positive emotions. It was also stronger among those who were older and people who reported being happier in their relationship.

The study found no links between a person's cortisol levels and their partner's negative emotions. Yoneda said this is not surprising, as prior research suggests that older adults may shield their partners from a physiological response to negative emotions in others.

Benefits of Positive Emotions in Relationships for Older Adults

Yoneda said that these results are also consistent with a psychological theory that suggests positive emotions increase our ability to act more fluidly in the moment. These experiences can create a positive feedback loop that enhances this ability over time.

The study suggests that people in relationships can share these benefits when they experience positive emotions. "Relationships provide an ideal source of support, especially for high-quality relationships," said Yoneda. "These dynamics may be fundamental in older adulthood."

This research was completed in collaboration with Theresa Pauly, Simon Fraser University; Christiane Hoppmann, University of British Columbia; and researchers from Humboldt Universit�t Berlin, Berlin, Germany, and Stanford University.

Reference:

1. What's yours is mine": Partners' everyday emotional experiences and cortisol in older adult couples - (https:www.sciencedirect.com/science/article/pii/S0306453024001628?via%3Dihub )

Source: Eurekalert