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“It was hard for me to understand what a relationship with a mother was like, because I carried such a deep grudge that it became the definition of our relationship, at least inside of me,” says Leid, 55, an author and motivational speaker based in Dallas.
Leid’s feelings stemmed from the fact that she was adopted as a toddler from Korea and never bonded properly with her mom. Growing up, Leid, who is an only child, says her mom rarely praised her, wasn’t affectionate and often compared her to her cousins or kids at church. She was deeply religious and very judgmental. The pair had vastly different personalities, and Leid was closer to her father.
“My grudge came from feeling that I wasn’t good enough” and constantly rejected, she explains, which made her insecure, angry and sensitive to judgment. “Honestly, I didn’t know who I was.”
In a 2023 study published in Qualitative Psychology, researchers defined grudges as “sustained feelings of hurt and anger that dissipate over time but are easily reignited.” And while they are a common response to being wronged by others, they can also harm your health.
In a 2021 study published in OBM Geriatrics, people 50 and older reported that experiencing a severe transgression by a partner or close relation negatively affected how they self-rated their overall physical health.
Due to the mental and physical ramifications of grudge-holding, psychologists and social psychologists say people typically benefit from taking steps to get rid of a grudge.
The impact of grudges
“Scholars do not know for sure why we hold grudges, but we think they do so for self-protective reasons,” says C. Ward Struthers, a professor of social psychology at York University in Toronto who has studied grudges.
Other reasons include a sense of a moral high ground or worrying about being perceived as weak, research published in 2023 in Qualitative Psychology shows.
Being wronged can yield a range of emotions, including anger, sadness and shame. It stems from replaying the event repeatedly in your mind, which is known as rumination, says Robert Enright, an author and educational psychology professor at the University of Wisconsin-Madison who has spent decades studying forgiveness.
Whatever the reason, holding a grudge and stewing on it can raise cortisol levels, or the body’s stress hormone, Enright says. Long-term, high levels of cortisol (from any cause) could increase your risk for anxiety, depression, headaches, digestive problems, sleep struggles and trouble with memory and focus.
Research published in Behavior Research and Therapy shows that rumination in particular may interfere with problem-solving and increase the likelihood of stress, anxiety, depression, insomnia and impulsive behaviors. Harboring grudges may increase heart rate and blood pressure, and it’s also linked to pain disorders, heart disease and stomach ulcers.
Grudges affect our emotional well-being, too. They can “erode trust and strain relationships,” says Noah Webster, a research associate professor at the University of Michigan’s Institute for Social Research who led the OBM Geriatrics study. Ultimately, this could lead to loneliness and social isolation.
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