Adding milk to coffee is a daily ritual for millions, but have you ever wondered if this common habit is actually beneficial? While it adds creaminess and softens the bitterness, research shows that combining milk and coffee might reduce the health benefits of your brew—and may even trigger digestion issues. Here’s what you need to know and some plant-based swaps to consider.
Coffee is rich in polyphenols, powerful antioxidants that support brain and heart health.
When milk is added to coffee, the casein proteins it contains can bind to the polyphenols. This reaction forms complexes that are harder for your body to absorb, meaning your coffee’s protective effects are reduced.
Studies, including one published in the Journal of Nutrition, have observed that dairy proteins reduce the antioxidant properties of both tea and coffee. The evidence suggests you’re not getting the full health potential of your drink when you add milk.
Many adults worldwide have difficulty digesting lactose, a natural sugar in dairy. When lactose is combined with caffeine, it may cause bloating, stomach pain, acid reflux, or nausea—especially on an empty stomach.
Caffeine stimulates gastric acid production. When paired with milk, this combo can be too intense for sensitive digestive systems and disrupt your morning.
Dairy proteins slow down the digestive process. When combined with caffeine, this may make your morning coffee feel heavier and dull its energizing effect.
With slowed caffeine absorption, the energy boost you expect may arrive later and feel weaker—reducing the reason most of us drink coffee in the first place.
The good news? You can still enjoy a creamy coffee without the drawbacks of dairy. Try one of these popular plant-based options:
– Almond milk – Light, nutty, and low in calories
– Oat milk – Naturally sweet and rich in fiber
– Coconut milk – Smooth, exotic, and easy to digest
These options are lactose-free, easier to digest, and do not interfere with the antioxidant properties of coffee. They also add unique flavors to your brew—making your morning cup not just healthier, but more enjoyable.
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