Loneliness may be more than just an emotion—it could be a fundamental biological need, similar to hunger or thirst. Neuroscientists studying mice have identified specific groups of brain cells that become active during social isolation and quiet down when social contact is restored.
Researchers found that prolonged isolation triggers neural circuits linked to discomfort, while reunion activates reward-related pathways. Surprisingly, physical touch appeared to be the most important signal for reducing feelings of isolation, even more than sight, sound, or smell.
These findings suggest that the brain carefully monitors social connection to maintain a healthy balance. Understanding this “loneliness circuit” could eventually lead to new treatments for isolation-related mental and physical health problems.
Read more at LiveScience