Your brain in your 60s may be a window into stroke risk

A new longitudinal study published in the Journal of the American Heart Association found that adults in their 60s who score poorly on cognitive tests face a significantly higher risk of having a first stroke years down the line. Researchers followed nearly 5,000 adults in Sweden for an average of 12.3 years and found that lower scores in global cognition, episodic memory, and perceptual speed were all linked to elevated stroke risk — but only in the 60–69 age group.

Interestingly, the same associations didn't hold for adults in their 70s or 80s. Researchers suggest this may be because "silent" brain injuries — which can quietly affect both cognition and stroke risk — are more detectable in your 60s, before they become nearly universal in older age groups.

By the Numbers:

• 86% higher stroke risk for lowest vs. highest global cognition scorers (ages 60–69)
• 68% higher risk for low episodic memory scores
• 66% higher risk for low perceptual speed scores
• Men with low global cognition had 2x the stroke risk; low episodic memory raised their risk by 2.3x
• 572 participants experienced a first stroke during follow-up

Why it matters: Cognitive testing is typically used to detect dementia — but this study suggests it could also serve as an early stroke screening tool for otherwise healthy adults in their 60s, opening the door to earlier intervention and prevention strategies.