The idea of “use it or lose it” can apply to everything from muscle tone to a newly learned skill. Now that list includes gray matter in the brain.
New research shows people who are social butterflies have more robust parts of the brain that can be affected by dementia. The findings support other studies showing increased socialization might help people ward off the disorder. The need for some sort of social interaction is even more acute for older adults who may be dealing with increased isolation brought on by the COVID-19 pandemic.
Researchers at the University of Pittsburgh were the first to use a highly sensitive form of brain imaging to evaluate gray matter levels in older adults. To establish their findings, they gathered information about the social habits of more than 300 people with an average age of 83. The participants then were given a brain scan to measure the integrity of cells used for social engagement.
The participants’ socializing was categorized and scored using a specialized scale. Activities such as lectures, adult education classes, volunteer work, long-distance travel and board games were given the highest scores. Whether the participants were married or lived with other people were also factors that were considered.
Those with the most social interaction were found to have better microstructure in their brains’ gray matter. Even moderate amounts of social interaction with a friend or relative was found to boost regions of the brain that affect decision-making and recognition of others.
The findings suggest socializing can be more than just an enjoyable way to pass the time. It may also keep your brain finely tuned.