Blood pressure too high? Two cups of coffee every day doubles the risk of dying from heart disease
Many folks wait till they have their first cup of coffee to feel like the day has truly started. In addition to giving you the morning boost you need to get going, research has revealed that, in some circumstances, coffee may provide important health advantages.
However, there are still many reasons to limit how much coffee you're putting back because it is such a potent stimulant.
And now, a new study has discovered that, for people with high blood pressure, drinking only two cups of coffee a day can increase their chance of dying from heart disease. Find out if you should delay ordering that next cup by reading on.
A study that was published on December 21 in the Journal of the American Heart Association (JAHA) offers the most recent information on the potential health consequences of coffee.
6,574 men and 12,035 women who participated in the Japan Collaborative Cohort Study for Evaluation of Cancer Risk were used by the research team to collect data. When they enrolled in the study between 1988 and 1990, all of the participants in the cohort ranged in age from 40 to 79.
According to a statement from the American Heart Association, participants were monitored through 2009, during which time they self-reported their coffee and tea consumption habits and had their lifestyle, diet, and medical history evaluated using information gathered during physical examinations and questionnaires (AHA).
Each participant's blood pressure was measured only once throughout the study, which allowed the scientists to categorise them into one of five groups depending on the results. The categories were graded as follows:
grade 1 hypertension ranged from 140 to 159/90-99; grade 2 hypertension ranged from 160 to 179/100-109; and grade 3 hypertension ranged from readings 180/110 or higher.
The optimal and normal blood pressure range was 130/85. Anyone with a value of 160/100 or over was considered healthy for the research.
According to the team's findings, study participants with severe hypertension who consumed two or more cups of coffee per day had a doubled chance of dying from heart disease compared to those who did not.
Additionally, the findings revealed that not every coffee or tea drinker experienced the same increase in risk.
Although the results suggest that drinking coffee may be unhealthy, this wasn't a widespread concern. One cup per day did not increase the risk of deaths from cardiovascular disease. Furthermore, no group was proven to be affected by any amount of green tea, another caffeinated beverage.
We found it surprising that drinking a lot of coffee raised the chance of dying from cardiovascular disease among those with severe hypertension but not in those with grade 1 or no hypertension.
The study's author, Masayuki Teramoto, MD, from the university's department of epidemiology and biostatistics in Japan and Osaka University Graduate School of Medicine
San Francisco, California, told HealthDay. "In contrast, consumption of green tea across all blood pressure groups was not linked to an elevated risk of cardiovascular disease death.
Coffee consumption has been linked to health benefits in other studies.
The AHA notes that prior research has in fact discovered some health benefits to coffee in its news release announcing the latest study. An increase in coffee consumption was shown to be correlated with a reduction in the risk of heart failure, according to a 2021 study that was published in the journal Circulation:
Heart Failure. The group also noted additional studies showing coffee drinking could actually lower the risk of hypertension in people who have not yet been given a diagnosis of the condition.
Researchers in the most recent study also noted that given the results with green tea, the heightened risk may not even be connected to caffeine. Instead, they claimed that the association might be due to the beverage's polyphenols' anti-inflammatory and antioxidant capabilities.
Despite the fact that both green tea and coffee contain caffeine, only coffee consumption was linked to an elevated risk of mortality in people with severe hypertension, according to Teramoto, who spoke to HealthDay.
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