What does loneliness do to the brain ?
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Research shows that chronic loneliness can have a significant impact on your overall health, including your brain health. Some studies even suggest that there may be a link between loneliness and an increased risk for developing dementia and Alzheimer's.
Answer:
Perceived social isolation, or loneliness, affects both physical and mental wellbeing, and this holiday season will be particularly lonely for many people as social distancing due to COVID-19 continues. A new study, headed by a team at McGill University, has now identified neurobiological signatures in the brains of lonely people that make them distinct in fundamental ways, based both on variations in the volume of different brain regions, as well as on how those regions communicate with one another across brain networks.