Until recently, the data on how coffee consumption affects blood pressure were contradictory.
To find out how daily coffee consumption actually affects blood pressure, a special study was conducted, which lasted 10 years
For this, the participants underwent a comprehensive examination:
- blood pressure was measured in the clinic,
- outpatient 24-hour monitoring of blood pressure and heart rate,
- participants measured their blood pressure at home in the morning and evening.
After 10 years, the survey was repeated with the same participants, and a survey was also conducted on how many cups of caffeinated coffee they drank per day.
The study found that participants who did not drink coffee, participants who drank coffee moderately, and participants who drank coffee frequently had approximately the same blood pressure readings over a long period of observation. Results were similar across all three types of measurements taken in the study.
In addition:
- The study excluded any possible gender effect on blood pressure due to coffee consumption.
- Clinical, home, and ambulatory heart rate measurements were similar in all participants throughout the study period.
- Onset of new hypertension and blood pressure variability were similar in coffee drinkers and non-coffee drinkers.
- Changes in antihypertensive treatment during follow-up were homogeneous across different groups of coffee consumers and did not significantly affect the results. This applied to different classes of antihypertensive drugs.
The results of the study provide convincing evidence that regular coffee consumption does not affect blood pressure values and variability measured both in and out of the clinic.
More information about the study here