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Before this, I’ve share a news about drinking black tea may cut blood pressure. But do you really know about the black tea?
What is the black tea?
- Black Tea is a tea made from the Camellia sinesis plant that are used to make medicine. Black tea used the small-leaved Chinese variety plant and the large leaved Assamese plant.
Black tea is a tea that is fully oxidized. It is the process that turns green tea leaves to a deep brown or black. The black tea is popular outside Asia.
Black Tea History
Until China’s Ming Dynasty (1368 – 1644 AD), only green tea was produced and consumed. It was during this dynasty, however, that oxidation was discovered and the Chinese realized that it could completely change their tea production. While the tea makers considered this newly created tea fit only for “barbarian foreigners,” it solved one of their major problems.
Green tea did not travel well over long distances and had the propensity to mold. When the tea was allowed to oxidize and then baked, the resulting leaf could retain its quality longer. This black tea was far more suitable for the lengthy transport to Tibet and Mongolia. This type of tea is now the most popular tea in most of the world beyond Asia.
Black Tea is effective for
1. Mental alertness.
2.Preventing dizziness upon standing up (orthostatic hypotension) in older people.
3. Reducing the risk of heart attacks
4. Reducing the risk of kidney stones.
5. Reducing the risk of Parkinson’s disease
6. Reducing the risk of ovarian cancer
7. Reducing the risk of hardening of the arteries (atherosclerosis), especially in women.
Reference : Narien
Medline Plus
NEW YORK (Reuters Health) – People who enjoy drinking black tea throughout the day may get the added benefit of a slight reduction in their blood pressure, suggests a new Australian study.
Although the study cannot identify specific components of the tea that might lead to a drop in blood pressure, the researchers said past studies have shown flavonoids, compounds found in many plants such as tea, are good for heart health.
“The message really isn’t for an individual to go out and drink a lot of tea,” said Jonathan Hodgson, the study’s lead author and a researcher from the University of Western Australia. He said, instead, the drop is like a bonus.
The study, published in the Archives of Internal Medicine, randomly assigned 95 Australians with normal blood pressure to two groups. One group drank black tea and another drank a beverage similar in taste and caffeine content.
Before the study started, the participants’ blood pressure throughout the day was about 121/72 millimeters of mercury (mm Hg).
Blood pressure readings less than 120/80 mm Hg are considered normal. High blood pressure is defined as a reading of 140/90 or above. People with a reading between the two are said to have “pre-hypertension.”
Each group drank their assigned beverages three times per day for six months.
After the six months the tea drinkers’ systolic blood pressure — the top number — fell 2 mm Hg, and their diastolic blood pressure also fell about 2 mm Hg.
While a drop in blood pressure is generally good, a 2 mm Hg drop is not significant enough to bring a person with high blood pressure out of the danger zone.
“Those are small changes and are nothing like what you would see if you took a blood pressure lowering medication,” said Dr. Joseph Vita, who has studied flavonoids at the Boston University School of Medicine and was not involved with the study.
However, the placebo group’s systolic blood pressure went up about 1 mm Hg and their diastolic blood pressure also increased about 0.5 mm Hg.
To account for potential influences from other foods, researchers had the people in both groups cut back on flavonoid-rich foods such as apples, grapes, dark chocolate and wine four weeks before and all throughout the study.
Hodgson said making the placebo group go from a flavonoid-rich diet before the study to a lower one could have caused blood pressure to go up.
The research was funded through government grants and by Unilever Research and Development, which is an arm of the company that owns the Lipton brand.
According to the researchers, the findings might provide a bigger benefit if they are applied to a large group.
“You’ve got — in the population — large numbers of people with blood pressure around the hypertension range. So just shifting that population down can make a big difference,” said Hodgson.
SOURCE: http://bit.ly/zJqgVE Archives of Internal Medicine, online January 23, 2012.
Source :- Healthnews
I’m not really familiar with black tea. Maybe I’ll search and write in at my next article. If you have any information about black tea, let’s share with me..
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THis week, there’s a revealation of 17 year old British factory worker, Stacey Irvine that she are only eat chicken nuggent in her life. This situation make bad happen when she was rushed to the hospital because of struggling to breathe. From the article, it show that she never eat fruit or vegetables in her life and only eating fast food chicken nuggents since she was 2 years old.
The story has become one of main focuss in health world this week. The chicken nuggent absolutely not a healthy meal. The chicken had been deep fried in oil and combine with a variety of stabilizers and preservatives that include some chemical. It contains more fat and protein from the meal.It will make worst if adding more sodium. As happen to Stacey Irvine, the intake can effect on breath. From the case, doctor found that the veins in Ms. Irvine’s tongue were swollen and she was diagnosed with anemia. It is not good for such a young girl get this disease.
Further such a high salt intake can increase a blood pressure that can put a risk to get stroke or heart attack.
Source :- Yahoo