In contrast, the researchers found that the frequency of social activities and the number of close friends and family were not associated with dementia risk. However, the authors of the study suggested that this might be because too few participants in the study were lonely or isolated for an effect to be seen.The short answer is that it’s not entirely clear yet, says, neuroscience researcher and neurodegenerative disease expert.
The amount of challenge in various tasks is important—especially as it deviates from normal activities, continues Cuccaro. “Further, when mental activities incorporate social components, the effect is much bigger.” Regular engagement in puzzles and games can also improve attention, concentration, and memory, which are often affected in individuals with dementia, adds Porter. “These activities provide a source of enjoyment and can help reduce stress, which is another important factor in maintaining brain health.”
Still, there is strong evidence that social engagement is key to reducing dementia, says Cuccaro. “As the authors pointed out, the lack of a strong association between social engagement and dementia was most likely due to the fact that the study participants were highly socially engaged at the start. If anything, I think this study supports the importance of integrating games, puzzles, and challenges into social settings.