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Positive Effects of Japanese Green Tea
Catechin, also called Tannin, is a bioflavonoid that has both antiviral and
antioxidant qualities. It helps to prevent cancer by inhibiting
the growth of cancer cells. Catechin also has many positive
cholesterol-lowering effects. It helps to clear blocked veins and arteries,
allowing your blood to flow more smoothly. Some studies show that Catechin
may help prevent strokes, heart attacks, blood clots and even heart disease.
Amazingly, Catechin also protects the entire body from oxidative damage due
to free radicals and other toxins in our environment.
Tea leaves create Catechin to protect themselves from ultraviolet rays. So
although all Japanese teas contain Catechin, those grown in full sunlight
such as Sencha have the most Catechin.
Catechin is extracted best in water with a temperature of over 167 - 176F
(75 - 80C).
The following is a list of the beneficial effects of
Removing free radicals (activated oxygen)
radicals (activated oxygen) are powerful oxidizing agents in the body which
are known to cause a wide variety of diseases, aging, and wrinkles. Free
radicals increase by overexposure to ultraviolet rays, aging, smoking, and too
much drinking. If you want to remove free radicals that have been created in
your body, you may do this by consuming foods that have strong antioxidant
properties. Catechin and Vitamin C are well known antioxidants. Japanese green
tea contains both Catechin and Vitamin C. It is beneficial to drink Japanese
green tea to remove these harmful free radicals.
Too much cholesterol is known to cause arteriosclerosis, myocardial
infarction (heart attack), and cerebral infarction (stroke).
all cholesterol is bad or unhealthy. LDL cholesterol is bad and HDL
cholesterol is good. Too much LDL cholesterol can cause cells in the body to
oxidize and cause arteriosclerosis. Catechin, which is found in Japanese green
tea, blocks the formation of bad LDL cholesterol and therefore is helpful in
preventing arteriosclerosis. Not only does the Catechin in Japanese green tea
prevent bad LDL cholesterol from forming, but it increases good HDL
cholesterol levels in the body as well.
Many studies have shown that ingesting Catechin promotes healthy energy
consumption in the body of human beings and animals - and reduces fat in the
body and digestive system. It has also been reported that Catechin absorbed
into the blood stream reaches cells in the liver and works to promote fat
Antibacterial and sterilizing
Catechin has strong antibacterial and sterilizing effects on germs and
bacteria. It has even been found to have the effect of sterilizing germs
(NRSA) that cause infections in hospitals, so Catechin is beneficial to ward
off infection and sickness in this way as well.
Studies have shown that Catechin can also prevent viral infections. Gargling
with Japanese green tea has been shown to prevent influenza and the common
cold and also helps to relieve symptoms of influenza and the common cold such
as sore throat, cough, and nasal congestion.
Catechin has an effect of moderating allergies (including airborne
pollen/mold allergies and dermatitis). It is recognized that Catechin
moderates the symptoms of allergies including itching and sneezing.
Catechin is an effective deodorant and general sterilizing agent. A cup of
Japanese tea after a meal prevents the growth of germs, which cause
periodontal disease and halitosis (bad breath).
Catechin is effective in preventing dental cavities. Catechin prevents
existing cavities from becoming larger by balancing the enzymes found in the
cavity area. By reducing harmful acids in the mouth which can destroy the
tooth enamel, Catechin also works to protect the enamel and keep your teeth
healthy and strong.
Tea is the only plant that makes the amino acid Theanine, also
known as Teanin or L-Theanine. Theanine stimulates alpha brain
waves, which are associated with a relaxed but alert mental state. It helps
relax the mind, allowing one to focus on the task at hand. Catechin is bitter
and Theanine is sweet. These two elements create a perfect balance of taste.
Controlled experiments have shown that Theanine has a positive effect on the
mind and improves memory by increasing Dopamine levels. The experiments also
show that alpha brain waves increase 40 minutes after consuming Theanine.
People can take advantage of their full mental capabilities when they are
relaxed. So try a cup of green tea 40 minutes before work or study!
You might wonder how a cup of green tea, which contains so much caffeine,
can be relaxing. The answer is Theanine. Theanine tempers the effects of
caffeine, which can cause nervousness or excitability (as you might find with
coffee) and works to relax the mind. So, although much caffeine is included in
green tea, green tea does not cause nervousness or excitability because of
Much Theanine is found in tea leaves of Ichibancha (the first pick of the
year) and Karigane (made from the stems of high grade tea). Gyokuro and Matcha
are especially rich in Theanine because the tea leaves are grown in defused
sunlight before harvest.
Theanine is equally extracted both in low and high temperatures.
Vitamin C, Catechin, and Vitamin E work together to enhance
immune function. These three nutrients also help to make your skin more
beautiful by reducing blemishes, wrinkles and sun damage. Vitamin C found in
green tea is water-soluble, and the heat used in brewing tea does not reduce
The mild caffeine in green tea has been found to increase
cognitive performance, alertness, and energy. It can also help with weight
loss through its stimulating and mild diuretic effects. The green teas with
the highest caffeine content are Matcha, Gyokuro and Sencha. Houjicha (Bancha)
and Genmaicha have the lowest caffeine content.
The bioflavonoids found in green tea help to keep your teeth
and gums healthy. You can gargle with green tea after brushing your teeth to
kill germs and prevent bad breath.
Tea is rich in minerals, including manganese, potassium and
calcium, which help to alkalinize the blood, regulate the heartbeat, and build
strong teeth and bones.
Ingesting Beneficial Constituents
all Japanese teas (Gyokuro, Sencha, Genmaicha, and Houjicha) except for
Matcha, you can ingest large amounts of the beneficial constituents by
brewing three times. It is said that 30% to 50% of the constituents are
extracted into water by brewing tea leaves three times.
Matcha is ground into powder and completely dissolved in water
when brewed (prepared), therefore you drink the whole constituents of the tea
leaves and ingest all of the healthful nutrients without throwing away the
leaves as one does with other teas: Gyokuro, Sencha, Genmaicha, and Houjicha.
Besides, by drinking Matcha you can also ingest oil soluble constituents
(Vitamin A, Vitamin E, Beta-carotene, etc.), which are not extracted into
water when brewed.
To brew one cup of tea (Gyokuro, Sencha, Genmaicha, and
Houjicha), about 3 to 4g (0.11 to 0.14oz) of tea leaves are used. To prepare
one bowl (cup) of Matcha, about 2g (0.07oz) of tea leaves are used. So, if you
are interested in ingesting constituents efficiently, you can most efficiently
ingest constituents by drinking Matcha, more so than with other teas.
After Teatime: Tips for Used Tea Leaves
Even after teatime, used tea leaves can benefit your daily
Green tea leaves have an amazing deodorizing effect. For
example, you can burn dried used tea leaves as incense. The smoke will
eliminate odors and make your room smell fresh. You can also put dried used
tea leaves in your shoes to remove bad odors. Odors on cooking equipment like
cutting boards and cooking pots can be removed by wiping them with damp used
Wiping a steel pot or knife with used tealeaves can prevent
the item from rusting. Tannin, an ingredient of green tea, makes an anti-rust
coating on the surface of steel.
Tea leaves have an antiseptic and astringent effect. You can
gargle with green tea to kill germs or use as a topical antiseptic or
astringent to keep your skin beautiful and healthy.
Traditionally, Japanese people used cloth soaked in Houjicha
as baby wipes to keep the baby's skin clean and soft.
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