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The Chinese have long considered tea to be a healthy drink. In recent years, we have become more aware of the health benefits of our daily cuppa. The benefits range from catechins which may reduce the breakdown of cartilage to the presence of polyphenols, the compounds that can help prevent cancer and heart disease. Also, the flavonoids existing in green and black teas (the natural compounds that give tea its flavor) act as antioxidants to protect the lining of the blood vessels. |
Green
Tea and Arthritis According
to a study published in the March 2001 issue of the Journal of Nutrition,
the catechins in green tea may benefit arthritis patients by reducing
the degradation of cartilage. A British laboratory study on human and
bovine cartilage showed that the green tea catechins prevented collagen
breakdown. Although additional studies are needed, the researchers concluded
that the consumption of green tea might prevent arthritis damage by
reducing inflammation and slowing cartilage breakdown. |
Black
Tea Helps Arteries Expand
Studies
have shown that people who drink at least one cup of black tea per day
have a lower risk of heart disease and stroke, but until recently no
one understood why. A small study at the Boston University School of
Medicine indicates that tea may work directly on blood vessels that
have lost elasticity by restoring the vessels' ability to expand when
the pulse rate increases.
In
an eight-week study, a small group of heart patients drank four cups
of either tea or water each day. Researchers inflated and deflated a
blood pressure cuff to increase blood flow in each volunteer's arm,
then used ultrasound to measure the dimensions of blood vessels. Tea
drinkers showed improved artery function. The Boston group speculates
that the flavonoids, natural compounds that give tea its flavor, act
as antioxidants to protect the lining of the blood vessels.
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Can
Teatime Increase One's Lifetime?
Lifestyle-related
diseases, including cancer and cardiovascular disease, are also characterized
as aging-related diseases, where aging may be the most potent causal
factor. In light of this, prevention of lifestyle-related diseases will
depend on slowing the aging process and avoiding the clinical appearance
of the diseases.
Green
tea is now accepted as a cancer preventive on the basis of numerous
in vitro, in vivo and epidemiological studies. In addition, green tea
has also been reported to reduce the risk of cardiovascular disease.
Scientific research results indicate that daily consumption of green
tea in sufficient amounts will help to prolong life by avoiding pre-mature
death, particularly death caused by cancer. Cardiovascular Disease Prevention
Drinking
4 -5 cups of tea a day may have a beneficial effect on two long established
heart disease risk factors: high blood pressure and high cholesterol.
Tea is rich in substances with antioxidant properties as well as vitamins
and minerals. As with fruit and vegetables, these have been shown
to guard against heart attacks, strokes and angina.
What are Antioxidants?
Tea
contains a group of chemicals classified as flavonoids. They have
strong antioxidant activity. Antioxidants help to defend the body
from, and repair the damage caused by, free radicals. Free radicals
are highly reactive molecules which are the by-products of the body's
oxygen processing system. When left unchecked they have been implicated
in the slow chain reaction of damage leading to heart disease and
cancer.
Cancer Prevention
There
is considerable research taking place to discover whether these antioxidants
can help prevent many common cancers as well as coronary heart disease.
Scientists are specifically looking at the effects of drinking tea
on breast, colon and lung cancer. It's in the early days of research,
but the initial findings look encouraging.
Oral Hygiene
Tea
has a natural fluoride content and therefore tea drinking can help
prevent dental cavities. Plaque which causes gum disease can be decreased
by tea drinking. General Health
It's
vital to drink at least two pints of fluid a day to prevent dehydration.
Drinking tea can make a valuable contribution to the body's fluid
intake. Tea also helps the body's digestive system. So it's the ideal
drink after a heavy meal. Tea taken with milk also contributes valuable
vitamins to the diet: riboflavin (Vitamin B2), Vitamins B6 and B1.
But perhaps the best thing about tea is that it's a completely natural
product - free from calories, colouring, preservatives, sugars, artificial
flavourings or other additives.
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