Ground Truths: Coffee, Correlation, and the Quest to Prevent Dementia

Dive into the latest JAMA study linking caffeinated coffee and tea to a potential 18% lower dementia risk—but hold the hype! In this 30-minute episode of Ground Truths, we break down the science with a biohacker lens: from the massive 43-year cohort data on over 131,000 people, to the "massive grain of salt" warnings from Dr. Céline Gounder. We explore associations vs. causation, plausible mechanisms like adenosine blocking, and why decaf misses the mark. Plus, actionable takeaways on timing your caffeine, stacking it with proven prevention strategies (exercise, diet, hearing health), and avoiding the sleep paradox.

Is your morning brew a brain booster or just a marker of healthy habits? We zoom out to the boring winners that actually move the needle on dementia risk, affecting over 7 million Americans.

Sources: JAMA (2026 study), CBS News (Dr. Gounder), Alzheimer's Association. Educational content; consult a doctor for personal advice.

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