"Stress Hormone" Cortisol Linked to Early Toll on Thinking Ability: "The study of more than 2,000 people, most of them in their 40s, found those with the highest levels of the stress-related hormone cortisol performed worse on tests of memory, organization, visual perception and attention."

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"Stress Hormone" Cortisol Linked to Early Toll on Thinking Ability: "The study of more than 2,000 people, most of them in their 40s, found those with the highest levels of the stress-related hormone cortisol performed worse on tests of memory, organization, visual perception and attention."