Nutrition Facts with Dr. Greger The Pros and Cons of Coffee
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Oct 23, 2025 Explore the surprising health benefits of coffee, driven by chlorogenic acids that can improve mood and lower blood pressure. Discover how roast levels affect antioxidant content and why adding dairy can inhibit phytonutrient absorption. Learn about the variability in coffee's effects based on genetic predisposition and caffeine metabolism. Some studies suggest coffee lowers disease risk, while others reveal complex interactions with heart health. Individual responses vary, making the perfect cup uniquely personal!
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Coffee Antioxidant Levels Vary Widely
- Chlorogenic acid levels in coffee vary over 30-fold across brands and roasts, greatly affecting potential health benefits.
- Dark roasting can destroy up to ~90% of chlorogenic acids, lowering antioxidant potential.
Milk Blocks Coffee Phytonutrients
- Adding dairy milk to coffee sharply reduces absorption of coffee polyphenols and antioxidant activity in the bloodstream.
- Soy milk does not significantly reduce absorption because gut bacteria can free bound compounds for later uptake.
Choose Black Or Soy To Preserve Benefits
- Avoid using cow's milk if your goal is to maximize coffee's antioxidant benefits.
- Use black coffee or soy milk instead to preserve phytonutrient absorption.
