When the month was up, those participants who showed kindness “were significantly more likely to report relationship satisfaction, as well as being less likely to avoid social situations.”
In addition to relieving depression and anxiety, scientists at Purdue University found those who volunteer have lower levels of the protein CRP, which is a marker of inflammation.
Inflammation has been linked to everything from depression and dementia to heart disease and cancer.
World Kindness Day, an international observance on Nov. 13, was introduced in 1998 by the World Kindness Movement with the goal of encouraging people around the world to show kindness to one another.
On Twitter, #WorldKindnessDay quickly became a trending hashtag, with people and organizations offering ways to be kind.