By age 80 years,most people have lost what percentage of their peak brain mass?

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By age 80, most people have lost between 5 to 10% of their peak brain mass. This loss of brain mass is a natural part of aging and can contribute to cognitive decline and memory problems. However, it is important to note that brain plasticity and the brain's ability to adapt and change can still occur in older adults, allowing for continued learning and growth.

By Age 80 Years,most People Have Lost What Percentage of Their