New research published in the American Journal of Clinical Nutrition found no association between drinking three or more cups of coffee a day and increased risk for high blood pressure.
Researchers conducted a systematic review and meta-analyses of long-term prospective studies that examined the association of habitual coffee consumption with risk of hypertension. They pooled data from six previous studies involving a total of 172,567 participants and 37,135 incidents of hypertension cases were included. They examined how many cups of coffee the participants drank each day—from less than one to more than five—and then followed them for up to 33 years.
They found habitual consumption of more than three cups of coffee a day is not linked to increased risk of high blood pressure compared to drinking less than one cup per day; however, there is a slightly elevated risk for light to moderate consumption of one to three cups per day.
Sources:
* American Journal of Clinical Nutrition: Habitual coffee consumption and risk of hypertension: a systematic review and meta-analysis of prospective observational studies
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