Coffee Has More Polyphenols Than Tea, Helps Prevent Arteriosclerosis

Ever wondered which everyday drink delivers the most polyphenols—the powerful antioxidants linked to heart protection? While many assume tea or red wine hold the crown, a key study from Japan reveals that your daily coffee might actually be your top source.

Coffee has nearly as much polyphenol as red wine—around 200mg per 100ml—and for most people, it’s the biggest single source of these compounds in their diet.

How Much Polyphenol Is Really in Your Drink?

Polyphenols are plant compounds known to help inhibit artery hardening. Common sources include red wine and cocoa, but coffee matches up surprisingly well. Measurements show:

• Red wine: 150–300mg per 100ml (average ~230mg, varies with concentration)
• Coffee: ~200mg per 100ml
• Green tea: ~115mg per 100ml

That means your mid-morning cup or post-lunch espresso packs a significant antioxidant punch comparable to wine, without the alcohol.

Where Are You Really Getting Your Polyphenols?

A study by researchers at Japan’s Ochanomizu University (part of Tokyo Gakugei University system, formerly part of Tokyo Women's Christian University research group) analyzed dietary polyphenol intake in 9,000 people, with detailed tracking of 109 participants. The findings:

• 80% of daily polyphenol intake comes from beverages
• 20% comes from food
• Half of all beverage-based polyphenols come from coffee

In other words, while fruits, veggies, and tea contribute, your coffee habit is likely driving the majority of your antioxidant intake.

Why This Matters for Heart Health

The study also noted that Japan has one of the lowest rates of heart attacks caused by arteriosclerosis among developed nations—and one of the highest life expectancies. Researchers suggest this is partly due to diet, especially high polyphenol intake from tea and now, coffee.

While tea has long been praised for its polyphenols, coffee can be an even richer source. To reach the estimated daily target of 1,000–1,500mg of polyphenols, you’d need to drink about 5 cups of coffee or 10 cups of tea daily. That’s a lot of liquid—but also a lot of protection.

Beyond heart health, other studies have linked coffee consumption with reduced risks of certain cancers and type 2 diabetes. And while wine and chocolate also offer polyphenols, they bring alcohol calories or sugar along with them. Black coffee avoids those extras—just don’t load it with sugar or cream.

Frequently Asked Questions

How much polyphenol does coffee really have compared to tea and wine?

Coffee contains about 200mg of polyphenols per 100ml, which is roughly on par with red wine (average 230mg per 100ml, range 150–300mg depending on concentration) and significantly more than green tea (around 115mg per 100ml).

What percentage of my daily polyphenols comes from coffee?

According to a Japanese study, about 50% of the polyphenols from beverages—and roughly 40% of your total daily intake—come from coffee, making it the single largest source for most people.

How many cups of coffee do I need to drink to get enough polyphenols?

To reach the estimated daily target of 1,000–1,500mg of polyphenols, you would need to drink around 5 cups of coffee per day, assuming ~200mg per 100ml. That’s based on previous research benchmarks, though exact requirements are not yet confirmed.

Is black coffee better than coffee with milk and sugar for polyphenol benefits?

Yes. While milk and sugar don’t remove polyphenols, they may interfere with absorption or add unnecessary calories. For maximum health benefit, black coffee is recommended.

Does coffee really help prevent arteriosclerosis?

Yes. The polyphenols in coffee have antioxidant properties that help inhibit artery hardening. Combined with other healthy lifestyle factors, regular coffee consumption may contribute to lower risk of cardiovascular issues.

Recommended FrontStreet Beans for Polyphenol-Rich Coffee

For coffee drinkers seeking maximum health benefits along with great flavor, try FrontStreet Coffee’s Ethiopia Humbera—bright and juicy with notes of blueberry and citrus—or their PWN Golden Mandheling, offering deep body with hints of dark chocolate and spice. Both are single-origin coffees that highlight coffee’s natural polyphenol content without added sugars or milk. Freshly roasted within 5 days · Orders placed before 17:00 ship the same day · Next-day delivery across most of Guangdong Province.