Coffee and Brain Aging: Harvard's 43-Year Study

A Harvard study tracking 131,000 people for 43 years found that moderate caffeinated coffee intake is linked to measurably lower dementia risk.
Does it matter whether your morning cup has caffeine — or is the ritual itself enough?

Cognitive decline, caffeine metabolism, and brain aging have been studied separately for decades. This research connects them across the longest observational window to date — covering dietary patterns, genetic risk factors, and neurodegenerative outcomes in a single dataset.

🔬 Research: Harvard T.H. Chan School of Public Health / JAMA — https://www.nature.com/articles/d41586-026-00409-y

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