What Coffee Actually Does to Your Brain (131,821 Person Study)

Brad Stanfield

Feb 24, 2026

Episode description

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Timestamps:
00:00 New Coffee & Dementia Study
03:30 Decaf vs Caffeine
04:26 Caveats and Limitations
05:03 Practical Tips

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Here are the links to the research papers referenced in the video:
https://alz-journals.onlinelibrary.wiley.com/doi/full/10.1002/alz.70235
https://www.frontiersin.org/journals/public-health/articles/10.3389/fpubh.2025.1585711/full
https://www.sciencedirect.com/science/article/abs/pii/S0899900715005389
https://jamanetwork.com/journals/jama/article-abstract/2844764
https://pmc.ncbi.nlm.nih.gov/articles/PMC12702361/

Thumbnail by James Kelly
Video edited by Troy Young
Script by John Milliken

The links above are affiliate links, so I receive a small commission every time you use them to purchase a product. The content contained in this video, and its accompanying description, is not intended to replace viewers’ relationships with their own medical practitioner. Always speak with your doctor regarding the content of this channel, and especially before using any products, services, or devices discussed on this channel.

Mindsip insights from this episode:

Drink 1 to 2.5 cups of coffee daily to reduce dementia risk

Drinking 1 to 2.5 cups of coffee per day was associated with the largest dementia risk reduction of 19% in a 43-year study.

#coffee

#dementia

Block adenosine receptors with caffeine to protect brain health

One speculative theory is that caffeine protects the brain by blocking adenosine receptors, which may decrease the formation of amyloid plaques.

#adenosine

#brain

Finish caffeine intake within four hours of waking for better sleep

To avoid disrupting sleep quality, it is recommended to finish all caffeine intake within four hours of waking up.

#coffee

#sleep

Limit coffee intake to maximize dementia risk protection

The protective effect of coffee on dementia risk slightly decreases for those drinking more than 2.5 cups daily, dropping from a 19% to an 18% risk reduction.