Shared brain abnormalities link insomnia, anxiety, and depression

A new study reveals that insomnia, depression, and anxiety share overlapping brain abnormalities, potentially explaining their frequent co-occurrence. Researchers found that all three disorders share reduced cortical surface area, smaller thalamic volume, and weaker brain connectivity. Each also displayed unique neural patterns, pointing to a shared brain circuit. This research, based on brain scans of over 40,000 participants, suggests that treatments targeting one disorder might improve others. It may also guide future therapies for these common mental health conditions.