Brain Aging May Depend on Childhood Intelligence

The research found that more than two-thirds of the association between cognitive ability in the elderly and cortical thickness was accounted for by differences in IQ decades earlier in childhood.

Health & Family

Older people who stay sharp tend to have a thicker cortex, which is the outermost region of the brain that includes the areas responsible for judgment and complex thought. But while preserving the cortex is important for successful aging, a new study suggests that childhood intelligence — not anything specific done in old age — largely accounts for why some elderly people have more cortical tissue and better cognition.

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