image: Advanced hippocampal development and aging linked to anxiety behavior Credit: Dr. Hideo Hagihara, Fujita Health University, Japan Toyoake, Japan — October 27, 2025 — A pioneering study by scientists from Fujita Health University and the Tokyo Metropolitan Institute of Medical Science has uncovered a new type of brain abnormality associated with anxiety—excessive neural development and aging in the hippocampus. This condition, called "hyper-maturity," was identified through an