Does Kindness Boost Your Health? Science Says Yes
Kindness is often seen as a gesture directed towards others – such as holding a door, giving a compliment, or helping someone cross the street. However, recent research suggests that these small, thoughtful actions might also bring benefits to the person performing them.
According to Zita Oravecz, a professor of human development and family studies at The Pennsylvania State University, kindness can create a powerful emotional connection between individuals. “It gives you this overwhelmingly positive, warm feeling that connects you to the other person,” she explains.
Psychologists refer to this phenomenon as "positivity resonance" – a brief but impactful moment of shared goodwill that can influence both the body and mind. This experience occurs on both a biological and behavioural level, as people smile at each other, release the hormone oxytocin, and their heart rates synchronize.
When the brain releases neurochemicals like oxytocin, dopamine, and serotonin, it helps reduce stress hormones such as cortisol. Over time, this can lead to lower blood pressure and reduced inflammation, contributing to overall well-being.
The Science of 'Positivity Resonance'
This phenomenon has measurable health effects. Studies show that acts of kindness, whether helping a neighbour or volunteering, can lower stress, reduce anxiety, improve mood, and even ease physical pain.
In a 2022 experimental study, participants who performed regular acts of kindness experienced greater reductions in depression and anxiety symptoms compared to those who did not. David Cregg, one of the study's authors, noted that social connection is strongly linked to well-being, and acts of kindness are among the most effective ways to foster such connections.
The Mental Health Foundation in the United Kingdom highlights similar benefits: helping others can reduce stress, boost self-esteem, and enhance emotional well-being.
Physical Benefits of Kindness
Beyond mental health, kindness may also have physical benefits. A decade-long study of about 48,000 people in the UK found that those who regularly donated money or volunteered experienced less pain that interfered with their ability to work.
The research tracked participants from 2011 to 2020. After adjusting for factors such as age, income, initial health status, and depression, researchers found that those who donated or volunteered reported lower levels of pain interference over time compared to those who did neither. The effect was strongest for those who engaged in both donating time and money regularly.
Another study followed nearly 13,000 American adults over a decade. It found that those who volunteered at least 100 hours per year had a lower risk of death and were less likely to face physical limitations later in life. They were also more active and reported higher levels of optimism, happiness, and life purpose. Notably, there was no link between volunteering and other health issues like diabetes, sleep problems, or depression, indicating that further research is needed to fully understand the relationship between kindness and health.
Small Acts, Big Impact
Ultimately, while many may think of kindness as something grand or time-consuming, Oravecz emphasizes that even small gestures can have significant consequences. “Even small acts of kindness can have large, unforeseen consequences,” she says. “It can alter someone’s life path.”
