Drinking Tea is Healthier than Drinking Water
Drinking three or more cups of tea a day is as good for you as drinking plenty of water and may even have extra health benefits, say researchers.
The work in the European Journal of Clinical Nutrition dispels the common belief that tea dehydrates.
Tea not only rehydrates as well as water does, but it can also protect against heart disease and some cancers, UK nutritionists found.
Experts believe flavonoids are the key ingredient in tea that promote health.
These polyphenol antioxidants are found in many foods and plants, including tea leaves, and have been shown to help prevent cell damage. [more]
Green Tea Protects the Heart
Green tea could help protect against the damage caused by heart attacks and strokes, researchers suggest.
A chemical found in the tea, which has been drunk for over 4,000 years, has been shown to reduce the amount of cell death which follows such trauma.
Cell death leads to tissue death and even organ failure.
Experts from the UK’s Institute of Child Health carried out the study, published in the journal of the Federation of Experimental Biology.
Green tea was frequently used in the past as fluid supply for patients suffering from infectious diseases, but recently researchers have begun to scientifically determine the health benefits of green tea.
During a heart attack, the amount of oxygen and nutrients reaching the brain and heart is reduced, which leads to cell death and causes irreversible damage.
The team of researchers, led by Dr Anastasis Stephanou, carried out laboratory tests on heart cells which found that a major chemical component of green tea known as epigallocatechin-3-gallate (EGCG) can reduce cell death after a heart attack or stroke. [more]
Green tea extract ‘is cancer aid’
A green tea extract may help patients with a form of leukaemia, a study says.
The tea, discovered in China nearly 5,000 years ago, has long been thought to have health benefits.
But the team from the Mayo Clinic in the US found it appeared to improve the condition of four patients with chronic lymphocytic leukaemia (CLL).
Experts said the Leukaemia Research journal study was interesting but more research was needed.
CLL is a blood and bone marrow cancer which affects white blood cells and is the commonest type of leukaemia with over 3,000 new cases – mainly in the over 60s – diagnosed each year in the UK.
“ Green tea has long been thought to have cancer-prevention capabilities. It is exciting that research is now demonstrating this agent may provide new hope for CLL patients ”
Tait Shanafelt, report author
It is called chronic leukaemia because it progresses more slowly than acute leukaemia with some patients living for decades with the disease.
As there is no known cure, doctors have traditionally not intervened in the early stages of the disease to see how it develops, before moving on to traditional forms of cancer treatment such as chemotherapy.
But the Mayo researchers decided to try green tea after a test tube study in 2004 showed it killed leukaemia cells.
Four CLL patients being treated at the clinic took green tea extract tablets containing epigallocatechin gallate, an antioxidant thought to fight cancer cells. [more]
Drinking Green Tea Reduces Arthritis Risk
rinking green tea could help keep arthritis at bay, say scientists.
The tea, first discovered in China nearly 5,000 years ago, has long been thought to be beneficial to health.
It has been linked to preventing coronary heart disease, stroke and certain types of cancer.
But now researchers in Sheffield have found that two compounds found in green tea, EGCG (epigallocatchin gallate) and ECG (epicatechin gallate) can help prevent osteoarthritis by blocking the enzyme that destroys cartilage.
Dr David Buttle, of the University of Sheffield, said laboratory tests showed the benefits of regular green tea consumption.
“Green tea should be drunk as a prophylactic to prevent disease.
“If you have fairly severe joint damage it may be too late to do anything about it, but if you spend decades of your life drinking green tea in the end it may be beneficial.” [more]
Green tea compound Alzheimer hope
An ingredient of green tea may help to protect the brain against the ravages of Alzheimer’s disease, research in the US suggests.
University of South Florida scientists found the component prevented Alzheimer’s-like damage in the brains of mice bred to develop symptoms.
The component – EGCG – is already strongly suspected of offering protection against certain cancers.
The study is published in the Journal of Neuroscience.
It provides evidence that EGCG decreases production of the beta-amyloid protein thought to play a key role in the development of Alzheimer’s symptoms. [more]