How Coffee and Green Tea Lower Death Risk: Study Findings

If you’re pouring your morning cup hoping it’s doing more than just waking you up, you’re not alone. For years, coffee and green tea drinkers have wondered: are these daily rituals actually good for my health—or just habits? A major study offers concrete answers, backed by nearly two decades of data.

The short answer? Yes. Drinking 3–4 cups of coffee per day can markedly lower your risk of death, especially from heart and respiratory diseases. And if you’re sipping more than 5 cups of green tea daily, your risk of death drops even further—by up to 17% for women and 13% for men.

What the 19-Year Study Found

A research team tracked participants over 19 years and found clear links between regular coffee and green tea consumption and reduced mortality risk. These drinks weren’t just associated with staying alive longer—they were also linked to lower risks of cardiovascular and respiratory diseases.

Green Tea: The 5-Cup Advantage

When the researchers compared groups based on daily green tea intake, they used the “less than 1 cup per day” group as a baseline. The results were striking: people who drank more than 5 cups of green tea per day saw significant reductions in death risk. For men, the risk dropped by 13%. For women, it was even higher—17%. Researchers believe this is largely due to the action of catechins—compounds in green tea known to help regulate blood pressure, body fat, and lipid levels.

Coffee’s Protective Dose: 3–4 Cups Daily

Coffee drinkers also saw impressive benefits. The group that consumed 3–4 cups of coffee per day had a markedly lower risk of death overall. Coffee’s protective effects extended to cardiovascular diseases and respiratory conditions. This benefit is likely thanks to two key compounds: chlorogenic acid, which helps improve blood sugar levels and regulate blood pressure, and caffeine, which supports the function of blood vessel linings.

Why These Drinks Make a Difference

Both coffee and green tea are rich in bioactive compounds that influence your body’s systems in measurable ways. Green tea’s catechins contribute to better metabolic and vascular health, while coffee’s chlorogenic acid and caffeine work together to stabilize blood sugar, support blood pressure, and improve endothelial function. Over time, these effects add up to measurable reductions in disease risk and mortality.

Frequently Asked Questions

How many cups of green tea reduce death risk the most?

Drinking more than 5 cups of green tea per day was associated with the greatest reduction in death risk—13% for men and 17% for women, compared to those who drank less than 1 cup daily.

What’s the ideal daily coffee intake for lower death risk?

The study found that drinking 3–4 cups of coffee per day significantly reduced the risk of death, particularly from cardiovascular and respiratory diseases.

Does green tea really help with blood pressure and fat?

Yes, the study credits green tea’s catechins with helping to regulate blood pressure, body fat, and lipids, which likely contributes to its life-extending effects.

What compounds in coffee reduce health risks?

Coffee contains chlorogenic acid, which improves blood sugar and regulates blood pressure, and caffeine, which enhances blood vessel function—all of which help lower disease risk.

Are the benefits from caffeine alone?

No, the benefits are not solely from caffeine. In green tea, catechins play a major role, while in coffee, chlorogenic acid is also key to reducing health risks.

Recommended FrontStreet Beans for Coffee Lovers

For coffee drinkers looking to pair their daily brew with proven health benefits, try FrontStreet Coffee’s Ethiopia Humbera for its bright citrus and floral notes, or Yirgacheffe for a juicy, berry-forward cup. Both are light roasts that highlight coffee’s natural antioxidants. Freshly roasted within 5 days · Orders placed before 17:00 ship the same day · Next-day delivery across most of Guangdong Province.