Loneliness Linked to Memory Loss, Study Finds

ISLAMABAD: A new study by researchers at the National University of Singapore (NUS) has revealed that loneliness may directly contribute to memory loss, while regular social interaction strengthens the brain’s ability to retain information.

The research highlights the importance of meaningful social engagement, not only for mental well-being but also for preserving long-term memory. Scientists focused on the hippocampus, a key brain region responsible for forming and maintaining memories. They discovered that a specific sub-region, called CA2, becomes active during social interactions and sends signals to another area, CA1, which supports long-term memory storage.

During experiments, researchers temporarily blocked CA2 activity and found that the memory-boosting effects of social interaction disappeared. This shows that social engagement directly triggers neurological processes that enhance memory, while isolation can have measurable negative effects on brain function.

The study also found that the benefits of social contact are temporary, meaning consistent interaction is needed to maintain brain health. Prolonged loneliness can increase the risk of memory impairment and even dementia. Researchers noted that social connections stimulate a protein in the brain that strengthens memory, but reduced interaction lowers this protein, weakening memory over time.

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Medical experts emphasized that loneliness and social isolation are not just emotional issues but also biological risk factors linked to psychological disorders and neurodegenerative diseases. They recommend making social activities a regular part of daily life.

The NUS team suggests fostering environments that encourage communication and community involvement as a way to protect memory, especially for older adults or those with vulnerable nervous systems.