Coffee and Tea Linked to Lower Brain Tumor Risk

What if your morning coffee routine wasn’t just waking you up—but actually protecting your brain? A major UK cancer study suggests there’s a real link between regular coffee or tea consumption and a reduced risk of developing a dangerous type of brain tumor. If you’re sipping your third cup wondering whether it’s doing more than just keeping you alert, the science might surprise you.

Drinking at least five cups of coffee or tea per day is linked to a 40% lower risk of developing glioma, a common type of brain tumor, according to research from Imperial College London published in the journal Cancer Epidemiology, Biomarkers & Prevention.

What the Study Found

Published on the 26th (as reported by the Daily Mail), the study analyzed data from over 300 patients diagnosed with glioma—an often aggressive brain tumor that typically originates in the brain’s supportive tissue. Researchers compared their daily caffeine habits with those of a control group without the disease. The key finding: people who drank five or more cups of coffee or tea daily had a 40% lower likelihood of developing glioma compared to those who drank less.

Why Caffeine Might Help Protect Against Tumors

The protective effect was more pronounced in men, although researchers haven’t pinpointed exactly why. One leading theory is that caffeine reduces blood flow to the brain, limiting the oxygen and nutrients available for tumor growth. This hypothesis suggests that caffeine creates an environment less conducive to tumor development. Importantly, the effect was not seen with decaffeinated versions of coffee or tea—meaning the caffeine itself is likely playing an active role in this potential preventive mechanism.

How Much Is Enough? The 5-Cup Threshold

The threshold identified in the study is clear: at least five cups per day. That means either coffee or tea—or a mix of both—consistently consumed. While the exact cup size wasn’t specified, the number offers a concrete benchmark for those looking to align their habits with the observed protective effect. Whether your preference leans toward a strong espresso or a delicate green tea, hitting that five-cup daily mark could be a factor in reducing your brain tumor risk.

Frequently Asked Questions

Does decaf coffee or tea offer the same brain tumor protection?

No, the study found that only regular coffee and tea containing caffeine were associated with a reduced risk of glioma. Decaffeinated versions did not show the same protective effect, suggesting caffeine plays a key role.

How many cups of coffee or tea are needed to see a benefit?

The research indicates that drinking at least five cups per day—of either coffee or tea or a combination—was linked to a 40% lower risk of developing glioma. Fewer than five cups did not show the same level of protection.

Was the protective effect stronger for any particular group?

Yes, the study found the protective effect of caffeine was more significant among men, though the reason for this gender difference remains unclear and requires further investigation.

Does the type of coffee or tea matter?

The study didn’t differentiate between types of coffee or tea, focusing instead on the presence of caffeine. Both caffeinated coffee and tea were effective, suggesting the benefit comes from caffeine itself rather than other compounds unique to a specific beverage.

Is this the first study to link caffeine to brain health?

While not the very first, this study adds strong epidemiological evidence to a growing body of research exploring how caffeine consumption might influence brain tumor risk and overall brain health.

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