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Chronic Disease Linked Loneliness to Cognitive Risk

A longitudinal MIDUS analysis involving 840 adults found that loneliness scores higher than a person's objective social-isolation score were linked to later cognitive impairment mainly through chronic disease burden, while the allostatic-load pathway was weaker than the chronic-disease pathway and not statistically confirmed for the main cognitive outcomes.1 Research Highlights Loneliness was separated from isolation: …

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Chord Progressions and Eye Contact Boost Brain Synchrony in 20 Dyads

Editorial card showing two people listening to music while neural synchrony lines connect across a dark social-neuroscience scene.

A 2026 fNIRS hyperscanning study involving 20 dyads found that structured chord progressions paired with live eye contact increased activity in social-brain regions and produced partner-specific neural synchrony more than scrambled-note control music.1 The result supports a plausible mechanism for music-supported connection, but it does not prove that chord progressions treat loneliness or replace clinical …

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PTSD Social Function Therapy Improved Family Function in Older Veterans

MHD featured image for PTSD social-function group therapy in older veterans.

A 2026 pilot randomized trial involving 36 older U.S. veterans with PTSD symptoms found that a structured social-function group therapy produced stronger signals for romantic and family functioning than a support group, with condition-by-time effects of eta-squared = 0.072 and eta-squared = 0.112. The same trial did not show a specific advantage for friendships and …

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Hikikomori & Loneliness in Japan: Trends, Definitions, Demographics (2024 Report)

In Japan, a country facing unique demographic challenges, loneliness has emerged as a pressing public health issue, intricately linked with the phenomenon known as hikikomori, or extreme social withdrawal. Through a detailed analysis of a nationwide survey and various factors influencing loneliness, a new study sheds light on the complexity of social isolation in modern …

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