Does Coffee Cause High Blood Pressure? Study Says No

You’ve probably heard it before: coffee raises your blood pressure, so drinking too much might lead to hypertension. That fear, driven by caffeine’s short-term blood pressure spike, has made many coffee lovers wonder—am I hurting my heart by drinking my daily cup (or six)? A major study offers some clear answers.

The short answer: no, regularly drinking coffee—even up to six or more cups per day—does not increase your risk of developing high blood pressure over time. In fact, women who drank 0–3 cups daily had a higher risk than those who drank more or none at all.

The Study Behind the Claim

Published in The American Journal of Clinical Nutrition, the research tracked 6,400 Dutch men and women with an average age of 40 over 11 years. Participants reported detailed information on diet, lifestyle, education, and family medical history. Researchers then analyzed the relationship between their coffee consumption habits and the development of hypertension during the study period.

What the Numbers Show

For women, those consuming at least six cups of coffee per day showed no higher risk of hypertension after a decade than those who abstained entirely. Women who drank only 0–3 cups daily had a statistically higher likelihood of developing high blood pressure compared to both regular coffee drinkers and non-drinkers. Men, meanwhile, showed no significant blood pressure impact regardless of how much coffee they consumed. However, male non-coffee drinkers had a slightly—but relatively small—lower risk of hypertension than coffee drinkers.

Why Less Coffee Might Mean More Risk

The researchers propose that frequent coffee drinkers may become habituated to caffeine’s temporary blood pressure-raising effects. People who drink little coffee, on the other hand, remain more sensitive to those short-term spikes. This difference in tolerance, rather than coffee itself being harmful, could explain why lighter coffee consumers face a higher long-term hypertension risk.

It’s important to note: while the study found no evidence that coffee leads to heart disease in healthy adults, the results do not apply to individuals who already have high blood pressure or other cardiovascular risk factors.

Frequently Asked Questions

Does drinking 6 cups of coffee a day really not affect blood pressure?

No, according to the study, women who drank 6 or more cups of coffee daily did not have a higher risk of developing high blood pressure over 10 years than those who didn’t drink coffee at all. Their bodies may have adapted to caffeine’s temporary blood pressure effects.

Are women who drink less coffee more likely to get high blood pressure?

Yes. The study found that women who drank only 0–3 cups of coffee per day had a higher risk of hypertension than both those who drank 6+ cups and those who didn’t drink coffee. This suggests habitual intake might lead to better tolerance.

Does coffee affect men’s blood pressure the same way?

Not exactly. The study showed no significant blood pressure impact from coffee in men, regardless of how much they drank. However, men who never drank coffee had a slightly lower (but still relatively small) risk of hypertension compared to coffee drinkers.

Can coffee cause heart disease in healthy people?

The study found no link between coffee consumption and heart disease in healthy adults. But it didn’t study people with existing high blood pressure or other heart risk factors, so those groups shouldn’t assume the same applies to them.

Why might drinking less coffee raise hypertension risk?

Researchers suggest that infrequent coffee drinkers remain more sensitive to caffeine’s temporary blood pressure spike. Regular drinkers may develop a tolerance, which could explain why light coffee consumers show a higher long-term risk.

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