Most people know that stressful relationships can ruin a day or make life feel more difficult. Arguments with family members, tension with coworkers, or ongoing conflict with someone close can leave people feeling tired and emotionally drained.
But scientists are now discovering that these kinds of stressful relationships may affect more than just mood. A recent study suggests that regularly dealing with difficult people may also influence how quickly the body ages.
The research, published in the journal Proceedings of the National Academy of Sciences, explored how social stress affects biological aging. Biological aging refers to how fast the body’s cells and systems wear down over time.
It is different from chronological age, which simply counts the number of years a person has lived. Two people may be the same age in years, but their bodies can age at different speeds depending on their lifestyle, environment, and health conditions.
In this study, researchers focused on people they described as “hasslers.” These are individuals who repeatedly cause problems, create conflict, or make everyday life more stressful for others. Hasslers might complain frequently, create arguments, demand emotional energy, or introduce constant tension into relationships.
To understand how these stressful interactions affect health, scientists analyzed data from more than 2,000 adults who participated in a health survey in the state of Indiana in the United States.
Participants were asked about their relationships during the previous six months. Specifically, they reported how often someone in their life had “hassled them, caused problems, or generally made their life more difficult.”
In addition to these questions, the researchers collected information about participants’ health and lifestyle. They also gathered saliva samples from each participant. These samples allowed scientists to study epigenetic markers, which are chemical signals in DNA that can help estimate how quickly a person’s body is aging.
Epigenetic markers are widely used in modern research because they provide clues about the biological processes that happen inside cells as people grow older.
When the researchers analyzed the data, they found a clear pattern. People who reported having more “hasslers” in their lives tended to show signs of faster biological aging. For each additional difficult person a participant regularly interacted with, the pace of biological aging increased by about 1.5 percent.
This may sound like a small change, but the effect can accumulate over time. According to the researchers, someone with one extra stressful person in their life might age biologically at a rate of about 1.015 years for every single calendar year. Over many years, even small increases like this could potentially add up and influence long-term health.
However, the researchers emphasized that the study shows an association rather than direct proof of cause.
In other words, the results suggest a link between stressful relationships and faster aging, but they cannot prove that difficult people directly cause biological aging. There may be other factors involved, such as overall stress levels, health behaviors, or life circumstances.
The study also revealed some interesting patterns about who reported having more hasslers in their lives.
Women were more likely than men to report difficult people. Researchers say this result is not entirely surprising. Previous studies have found that women often experience social relationships more intensely and may be more sensitive to both positive and negative interactions.
Women are also more likely to notice emotional problems within relationships and to feel responsible for managing those situations. Because of this, stressful relationships may have a stronger emotional impact on them.
The study also found that people who already had poorer health were more likely to report difficult relationships. In addition, individuals who had experienced challenging childhood environments were also more likely to report having hasslers in their adult lives.
Another interesting discovery was the identity of the people who caused the most stress. Many participants named family members as their primary sources of difficulty. Parents and children were more often mentioned than spouses. Outside the family, coworkers, roommates, and neighbors were also commonly described as stressful individuals.
These findings highlight an important challenge. Unlike friendships, which people can sometimes end more easily, family relationships and workplace interactions are often difficult to avoid. People may feel obligated to maintain these relationships even when they are emotionally exhausting.
Experts say that one possible strategy is to create healthier boundaries. Setting limits on how much time and emotional energy is invested in stressful relationships may help reduce the negative impact. Recognizing when a relationship is causing harm can be an important first step in protecting one’s mental and physical well-being.
At the same time, researchers emphasize that social relationships are still essential for good health. Positive connections with supportive friends, family members, and community members can provide emotional comfort, reduce stress, and improve overall well-being.
In fact, many studies have shown that strong social bonds are linked to better mental health, stronger immune systems, lower risk of cognitive decline, and longer life expectancy.
On the other hand, loneliness and social isolation can be serious health risks. The World Health Organization has estimated that loneliness may contribute to hundreds of thousands of deaths worldwide each year.
When analyzing the findings of this study, the researchers suggest that the key issue may not simply be having relationships, but the quality of those relationships. Supportive and caring interactions can protect health, while constant conflict or emotional strain may gradually take a toll on the body.
Although more research is needed to fully understand the biological pathways involved, the study provides new evidence that everyday social stress may play a role in how our bodies age over time. It reminds us that maintaining healthy relationships and managing stress are important parts of protecting both emotional well-being and physical health.
If you care about wellness, please read studies about nutrients that could combat inflammation in older people, and essential foods for healthy aging.
For more health information, please see recent studies about the link between processed foods and chronic diseases, and a simple diet change for a healthier life after 65.
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