15-01-2008, 09:23 PM
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#6 (رابط ثابت)
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عضو مسجل
تاريخ التسجيّل: Sep 2007
المشاركات: 310
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الف شكر على الموضوع الجميل و لكن عندي تعليق بسيط و هو ان غالبية الناس بيعتقدوا ان الشاي الاخضر فوائده أكتر من الشاي الاسود . بل البعض بيعتقد ان الشاي الاسود ضار
و لكن الحقيقه غير كده . فيه دراسات كتير أثبتت ان فوائد الشاي الاسود لا تقل أبداً عن فوائد الشاي الاخضر و اللي بيجعله أفضل من الشاي الاخضر هو نكهته المميزه
و أدي مثال بسيط على الدراسات اللي اتعملت على الشاي الاسود :
Green or Black Tea - which is better?
Until recently, tea research has focused on green tea. Green tea is loaded with the compound epigallocatechin gallate (EGCg), a powerful anti-oxidant. Since the fermentation process used to make black tea converts EGCg into other compounds, researchers assumed black tea had less health benefits than green tea. However, recent studies indicate the compounds contained in black tea - theaflavins and thearubigens - do more than contribute to its dark color and distinctive flavor. They also provide health benefits originally attributed solely to green tea.
It's important to remember that tea research is still in the early stages. Jane Higden, a research associate with the Linus Pauling Institute, states in a recent article: "although numerous observational studies have examined the relationships between tea consumption and the risks of cardiovascular disease and cancer, there is no conclusive evidence that high intakes of tea are protective in humans." Still, it looks like there is no need to worry about depriving yourself of possible health benefits if black tea is your beverage of choice.
Here are the results of research into black tea:
Black Tea Research
* A long-term study by the Netherlands National Institute of Public Health and the Environment
* found a correlation between regular consumption of black tea and reduced risk of stroke. Researchers looked at data from a study examining the health benefits of foods that are high in flavonoids - phytonutrients with antioxidant benefits. While some of the flavonoids were obtained from fruits and vegetables, seventy percent came from black tea. The study looked at 552 men over a 15 year period. Researchers concluded that the flavonoids in black tea helped reduce the production of LDL - the "bad" cholesterol that can lead to stroke and heart attacks. Furthermore, men who drank over four cups of black tea per day had a significantly lower risk of stroke than men who drank only two to three cups per day. A separate study by Dr. Jose
* ph Vita at Boston's School of Medicine supported these results. For four months, sixty-six men drank four cups of either black tea or a placebo daily. Dr. Vita concluded that drinking black tea can help reverse an abnormal functioning of the blood vessels that can contribute to stroke or heart attack. Furthermore, improvement in the functioning of the blood vessels was visible within two hours of drinking just one cup of black tea. Finally, a study of over 3,000 adults in Saudi Arabia - where black tea is
favored over green - found that regular consumption of the dark brew can reduce the risk of coronary heart disease by fifty percent.
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