Why is green tea good for you?

Question

just curious because i'm drinking some and it says on the back of te pack its healthy and that!

Answer 1

Last week, doctors in the U.S. said they had developed a cream to ward off skin cancer. The magic ingredient is green tea, which is well known for its cancer-fighting properties. Natural antioxidants called polyphenols in the tea help block the growth of skin cancer cells.


In fact, green tea has a whole host of other health benefits. Here, Amy Anderson investigates why it's the healthiest cuppa you can drink.

• Green tea helps burn fat

It can help speed up the metabolic rate because its antioxidant effect helps the liver to function more efficiently.

A recent U.S. study of overweight men found that, with no other changes to their diet or exercise regimes, drinking green tea three times a day burned up 200 extra calories a day. The green tea drinkers also found that their energy levels were greatly increased.

In addition, green tea reduces blood sugar levels. High blood sugar levels are responsible for the storage of glucose as fat, so the lower your levels, the less fat you store.

• Green tea protects against heart disease

It has been shown to lower LDL (bad) cholesterol, because its potent antioxidant effects inhibit the oxidation of LDL cholesterol in the arteries.

The formation of abnormal blood clots (thrombosis) is the leading cause of heart attack and stroke, and green tea has been shown to inhibit abnormal blood clot formation as effectively as aspirin.

However, it should be noted that aspirin has some anti-thrombotic effects that differ from green tea, so if you are taking low-dose aspirin to prevent a heart attack or stroke, you should continue doing so even if you also drink green tea.

It has also been shown to elevate levels of HDL (good) cholesterol that helps remove atherosclerotic plaque from arterial walls.

• Green tea can help to lower blood pressure


A major cause of hypertension (high blood pressure) is an enzyme secreted by the kidneys called angiotension- converting enzyme (ACE).

Popular drugs for hypertension act as ACE inhibitors: by blocking the effects of ACE, blood pressure is reduced. Green tea is a natural ACE inhibitor, and several medical studies show lowered blood pressure in animals and humans given green tea extracts.

• Green tea can help protect against diabetes

When starch is consumed, it requires the enzyme amylase to break it down into simple sugars that can be absorbed in the bloodstream.

Green tea polyphenols inhibit amylase, and so can help lower blood sugar levels.

High blood levels of glucose and insulin predispose people to diabetes. One study showed that just one cup of green tea a day inhibited amylase activity by 87 per cent.

• Green tea can help prevent food poisoning


As it can kill bacteria, drinking green tea with meals may reduce the risk of bacterial food poisoning.

It prevents the growth of dangerous intestinal bacterial strains such as clostridia and E. coli and promotes the growth of friendly bifidobacteria.

• Green tea can prevent bad breath


Drinking green tea - which is a natural anti-bacterial agent - with food may help kill the oral bacteria that cause cavities and bad breath.

• Green tea guards against hepatitis

Viral hepatitis is often triggered by high levels of iron in the liver. Green tea lowers iron levels throughout the body, so may have a direct anti-viral effect against certain strains of hepatitis.

• Green tea can protect against cancer

There is growing evidence to suggest that green tea contains compounds that fight cancer. The tea contains a compound called epigallocatechin-3-gallate (EGCG), which helps inhibit blood vessel growth. Studies have found this to be useful in preventing tumours from forming new blood vessels, which they need to survive.

Other studies have shown EGCG blocks an enzyme needed for cancer cell growth.

• Green tea can help prevent arthritis

A recent study found that antioxidants in green tea may prevent or reduce the severity of symptoms of rheumatoid arthritis.

Antioxidants in the tea inhibit the Cox-2 gene that triggers inflammation, working in much the same way as anti-inflammatory drugs.

• Green tea improves your immunity

Gargling with green tea boosts immunity to influenza and flu, according to a study in Japan.

Research at Harvard University also indicated that green tea chemicals stimulated gammadelta T-cells, which bolster immunity against bacteria and viruses.

• Green tea can protect against Alzheimer's disease

A recent two-year study of a group of people aged 80 and over found that 96 per cent of those who drank ten cups of green tea a day showed no signs of cognitive impairment, compared to only 12 per cent who didn't drink green tea.

The same study found that alcohol and coffee disturbed the protective effects of green tea on the brain.

• Green tea may help fight allergies

Researchers in Japan have identified a compound in green tea that, in laboratory tests, blocks a key cell receptor involved in producing an allergic response.

The compound, methylated epigallocatechin gallate, works by blocking the production of histamine and immunoglobulin E, two compounds in the body that are chiefly involved in triggering and sustaining allergic reactions.

Although similar compounds in green tea have previously been shown to be anti-allergenic, this particular compound appears to be the most potent.

Answer 2

Drinking green tea has been shown to provide the human body with numerous health enhancing components.
It contains a very high value of catechin polyphenols that have antioxidant properties that are known to fight against cancer. In addition, green tea provides polysaccharides, flavonoids, vitamin B complex, vitamin C (there's more vitamin "C" in one cup of green tea than in an orange), vitamin E, R-Amino butyric acid and fluoride in it's natural state.
Beware, though, that it still contains caffeine, so not recommended as a night-cup (not if you want to, erm: sleep...:)

Answer 3

Green tea is not oxidized and Throughout China and Japan, green tea is a staple of the diet, particularly among the older generation. Epidemiological studies (mostly conducted in Asian populations) have consistently associated green tea consumption with lower incidence of many different cancers.


EGCG targets and defuses a basic, cancer-sparking protein found throughout the body.
EGCG and other green tea components prevent the proliferation of prostate cancer cells.

Green tea slows the growth of breast tumors.

Green tea suppresses the metastasis of breast cancer cells.

Green tea can induce "cell death" in lymphoma cells......etc

Answer 4

Antioxidants

Answer 5

It haves a lot of vitamin c in it and its a healthy drink it is just like regular tea butit is just different

Answer 6

The un-roasted non fermented yet uncooked green dried tea leaves yield this colour. green tea is attributed by using its uncooked status of leaves. The black bleeds in basic terms in pink no black all in all.

Answer 7

There are many oxidants in your diet (things that can mess up your health) like preservatives etc., green tea helps neutralize them.

Answer 8

Camellia sinensis or green tea, has a cleansing effect, it helps in digestion and it has many anti-oxidants.

Answer 9

It's all the antioxidants. You can find them in many other foods as well.

Answer 10

Antioxidants...which prevents diseases such as cancer by neutralizing free radicals from damaging/mutating living cells and tissues.

Answer 11

It's got antioxidants and apparently it can speed up your metabolism.