We knew it all along: doing nice things for people makes us feel happy. It can be as simple and fast as helping that old lady across the street. Or it can be huge, like donating your car to the Kars for Kids car donation program, knowing that some child, somewhere, will benefit from this act. But isn’t it ironic that doing nice things for others makes us happy, too?
According to David R. Hamilton, PhD, that’s because doing loving acts of kindness has side effects. Not the bad kind of side effects you get from taking a new medicine that might leave you drowsy, itchy, or worse, but the good kind, the kind of side effects that are desirable. Here are five of those side effects:
- Doing good generates happiness for the doer. For some people, this is about fulfilling a spiritual need, about digging deep within and finding the meaning and affirming who we are. But there’s also the biochemical side of being nice. When we do good deeds, levels of feel-good brain chemicals increase. These chemicals are called endogenous opioids and lead to an increase in dopamine levels. The result is a natural high that psychologists refer to as “Helper’s High.
- ”Doing good is good for your cardiac health. That warm feeling you get when you do something nice? That feeling of warmth spurs production of the hormone oxytocin both in the brain and throughout your body. Oxytocin plays an important role in regulating the cardiovascular system by inducing the release of nitric oxide in the blood vessels. Nitric oxide helps to dilate the blood vessels and in so doing, lowers blood pressure. In spurring a mechanism to lower blood pressure, oxytocin protects the heart. That’s why some call this hormone “cardioprotective.”
- Doing good staves off aging. In addition to its “cardioprotective” properties, oxytocin lowers heart levels of free radicals and inflammation, two major culprits involved in the cardiac aging process. Additionally, engaging in acts of kindness activates the vagus nerve, responsible in part for controlling heart rate and levels of inflammation.
- Doing good decreases emotional distance. Nice people tend to bond with other nice people. The more we engage in acts of kindness, the closer we feel to our partners. There may very well be a genetic component to being the kind of person who does kindnesses. Long ago, a kindness extended to another could increase that person’s chances of survival. The adaptation process meant that for some people, kindness became part of the genome.
- Doing good is contagious. When we’re nice to others, we serve as an inspiration for others to do likewise. The more kind acts we do, the more we generate. It’s the ripple-effect played out in real-time. A study performed in 2011 illustrated this concept to perfection. A 28 year-old man donated a kidney. His friends and family heard about it and many of them followed suit. The New England Journal of Medicine reported on this apparent domino effect in which 10 people became kidney recipients as a result of this one man’s act of kindness.