A new study from The University of Western Australia has found that drinking black tea regularly could help lower blood pressure, offering a simple way to reduce the risk of heart disease. High blood pressure is one of the biggest risk factors for heart problems, and even small improvements can make a meaningful difference for long-term health.
In this study, researchers looked at 95 Australian adults between the ages of 35 and 75. The participants were divided into two groups.
One group drank three cups of black tea every day for six months, while the other group drank a placebo beverage that had the same taste and amount of caffeine but wasn’t made from tea. This design helped the researchers focus on the effects of the tea itself, not the caffeine.
After six months, the results were clear. People who drank black tea had lower blood pressure compared to those in the placebo group.
Specifically, their systolic and diastolic blood pressure levels dropped by about 2 to 3 millimeters of mercury (mmHg). That might sound like a small number, but over time, even this modest reduction can significantly reduce the risk of heart disease and stroke across a population.
To understand these results, it helps to know a little about how blood pressure is measured. The first number in a blood pressure reading is called systolic pressure. It measures the force of blood in your arteries when your heart is beating.
The second number is diastolic pressure, which measures the pressure in your arteries when your heart is resting between beats. High readings for either number can increase the risk of serious health issues.
While this study adds to growing evidence that tea may be good for heart health, the researchers say more work is needed to fully understand how it works.
One theory is that black tea helps improve the function of blood vessels, making it easier for blood to flow and reducing pressure on the heart. Previous research has suggested that certain natural compounds in tea, called flavonoids, may help relax blood vessels and reduce inflammation.
What makes this finding particularly useful is how easy it is to put into practice. Drinking three cups of black tea a day is a simple habit that many people could adopt without major changes to their lifestyle. It could be a helpful addition to other heart-healthy steps like eating well, staying active, and managing stress.
The study, led by Jonathan Hodgson and published in the Archives of Internal Medicine, offers yet another reason to enjoy a cup of tea. While it’s not a cure-all, this small daily habit could play a part in helping people lower their blood pressure and protect their hearts over time.
As always, anyone with high blood pressure should talk to their doctor about the best plan for managing their health. But adding tea to your daily routine might be a good—and tasty—place to start.
If you care about blood pressure, please read studies about blood pressure drug that may increase risk of sudden cardiac arrest, and these teas could help reduce high blood pressure.
For more information about health, please see recent studies about nutrient that could strongly lower high blood pressure, and results showing this novel antioxidant may help reverse blood vessels aging by 20 years.
Copyright © 2025 Knowridge Science Report. All rights reserved.
