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Several studies have highlighted the importance of social engagement and activities in maintaining cognitive health. The strongest evidence for an association of social connections with a lower risk of cognitive decline is related to social engagement and social activities.[2]

Social isolation is a significant risk factor for developing dementia, including Alzheimer's disease. Research indicates that social isolation can increase a person’s risk of dementia by approximately 60%, although some studies suggest varying degrees of impact.[1] This link is complex, and it's often difficult to determine whether social isolation is a cause or a consequence of dementia, as it can be associated with other risk factors like physical inactivity and depression.[1]

Social contact can also help promote healthy behaviors like exercise and reduce stress and inflammation.[1] Studies show that people who participate in social activities are at a lower risk of dementia.[1]

Engaging in social activities may help build up your brain’s ability to cope with disease, relieve stress and improve your mood. Examples of these activities include adult education or learning, arts and crafts (especially in groups), playing a musical instrument or singing, and volunteering.[1]

Social activity can strengthen neural circuits in the brain, making them more resistant to the buildup of pathology that occurs with age. Social behavior activates the same areas of the brain involved in thinking and memory.[3]

A recent study posted online in Alzheimer's & Dementia: The Journal of the Alzheimer's Association shows that frequent social activity may help to prevent or delay dementia in old age.[3] The findings suggest that more frequent social activity points to a 38% reduction in dementia risk and a 21% reduction in mild cognitive impairment risk, compared to the least socially active.[3]

Social connection reduces AD risk by up to 20% (Journal of Alzheimer’s Disease, 2024).

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