🧠 Brain Enters Four Turning Points: at Ages 9, 32, 66, and 83

Neuroscientists at the University of Cambridge analysed MRI scans from 3,802 people aged 0–90. They discovered that the brain reorganises in five major life phases, separated by four sharp turning points at ages 9, 32, 66, and 83.

The team says these shifts show brain development is punctuated by dramatic reorganisations rather than a steady, continuous change.
Researchers suggest the identified eras could help explain why certain mental-health disorders emerge at specific life stages and why dementia risk rises in later years.

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