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Adding dairy to your coffee can blunt its immediate brain-boosting effects Milk proteins (casein & whey) bind coffee’s polyphenols (the chlorogenic acids), reducing rapid absorption by ~20–30% Instead of quickly entering your bloodstream, these polyphenols travel further down your digestive tract, delaying their beneficial impact on cognitive performance If... show more
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From our latest episode A deep dive on coffee More than 40 hours of research summarized in just 50 minutes Watch it here:

In my opinion, a 20-30% reduction in rapid absorption is not so bad. If you hate the taste of black coffee…

You lost me at plant based milk

Bovine mammary excretion stew…

Interesting. I like both black and with milk. Do I still get the same improvements with milk, even if they are delayed?

Matcha contains polyphenols, primarily catechins (like EGCG), which contribute to its cognitive benefits. Adding dairy (casein/whey) can bind these catechins, reducing their bioavailability by ~20–40%, similar to coffee. This delays absorption, blunting immediate brain-boosting effects.

what about non A1 cows? Or goat milk?

Interesting!

Would adding Ghee to my coffee have the same impact?

Thanks
