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High blood pressure (hypertension) experienced by many people and for the safety of people still advised to have a normal blood pressure levels of 120/80 mmHg. Problem of high blood pressure is one of them can be overcome by drinking black tea.

Tea has been believed to have many benefits. Tea also has various kinds, and each has its benefits. People who regularly drank black tea may benefit from a slight decrease in blood pressure. It is based on a new study from Australia.

"Although the study could not identify the specific components of tea that may cause a decrease in blood pressure. However, recent research shows that, flavonoids, namely a compound found in many plants such as tea, is good for heart health," said the researchers.

"It never hurts to try to consume black tea regularly, given the benefits to be gained," said Jonathan Hodgson, a researcher from the University of Western Australia as reported by HealthNews, Friday (27/01/2012).

The study has involved 95 people in Australia were randomized with normal blood pressure for the two groups. One group of black tea and other drinks with the same flavor and contains caffeine. The results of these studies have been published in the Archives of Internal Medicine.

Before the study began, the participants throughout the day blood pressure is about 121/72 mmHg. Blood pressure readings less than 120/80 mmHg is considered normal. High blood pressure is defined by blood pressure above 140/90 mmHg. While people with blood pressure between the two categories is said to have pre-hypertension.

Each group was instructed to drink 3 times per day for 6 months. After 6 months of systolic blood pressure of the blood of tea drinkers fell 2 mmHg, and diastolic blood pressure also decreased by approximately 2 mm Hg. While the decrease in blood pressure is generally good, a 2 mm Hg were not significant enough to bring someone with high blood pressure out of the danger zone.

"It is only found less significant reduction of blood pressure due to drinking black tea, not as a result of blood pressure-lowering drugs," said Dr. Joseph Vita, a researcher who focuses flavonoids studied at Boston University School of Medicine.

However, systolic blood pressure (blood pressure when the heart is pumping / upper limit) in the placebo group increased by approximately 1 mmHg and diastolic blood pressure (the pressure when the heart is relaxing / lower limit) is also increased by about 0.5 mmHg.

To take into account the potential influence of other foods, the participants are not allowed to eat foods rich in flavonoids such as apples, grapes, dark chocolate and wine four weeks before and during the study.