Why are higher childood IQ scores related to better health and longer life?
Cognitive ability (intelligence) test scores from childhood are associated with how long people live, and the risk of some illnesses. This is the field of cognitive epidemiology.
“I describe some recent studies that illustrate advances in the field, including those involving the Scottish Mental Surveys of 1932 and 1947. I describe some of the causes of death, illnesses, and health behaviours that are associated with intelligence assessed in youth.”
Some possible causes of intelligence-health associations are described, including genetic contributions.