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Health Benefits Of Green Tea

Discussion in 'Physiology' started by Egyptian Doctor, Jul 9, 2012.

  1. Egyptian Doctor

    Egyptian Doctor Moderator Verified Doctor

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    Green tea has many roles in medicine as it helps in treating cancer, heart problems, cardiovascular diseases, high cholesterol levels, rheumatoid arthritis, infection, tooth decay, etc. Green tea contains an antioxidant epigallocatechin-3 gallate (EGCG) which is helpful in treating a variety of diseases.
    Green tea acquires a prestigious place among soft beverages and it is one of the foremost things that come to the mind when the topic is anti oxidants. Within a short time, it has made billions of fans around the world and many lovers of normal tea have switched on to green tea, due to its health benefits. Those who are habituated to normal tea may not like its taste for the first time, but I am sure that it will be their favourite on very soon.

    What’s there in green tea that makes it so special and so healthy? How to use it? What are the products available in market that are based on green tea? There are many such questions which we have tried to answer below.

    What is Green Tea: Green tea comes from the same plant from which normal tea is obtained. Scientifically, it is known as Camellia Sinensis. In fact, it is the same tea but processed differently. The normal black tea is obtained by fermenting the tea leaves. This fermentation changes its colour, flavour and raises the level of caffeine and tannin in it. Whereas, in case of Green Tea, the tea leaves are dried or slightly steamed but not fermented. This makes it look green when brewed and otherwise.

    Constituents: Apart from caffeine, which gives tea its characteristic taste, bitterness and stimulating effect, Green Tea is rich in a group of chemicals, called Catechin Polyphenols (Commonly known as Tannins which contribute to bitter taste and astringency) like Catechin, Epicatechin, Epicatechin Gallate (ECG), Epigallocatechin Gallate (EGCG), Pro-Anthocyanidins etc. They are also known as Flavonoids and are very powerful anti oxidants. Flavonoids, together with some amino acids like Thianine, are responsible for the flavour of green tea. Further, it also contains Amino Acids like Theanine, Butyric Acid & Liganin; Xanthine Alkaloids such as Adenine, Dimethylxanthine, Theobromine, Theophylline and Xanthine; Pectin (also found in fruits); saccharides (sugar), Chlorophyll and Triterpene Saponins. Some vitamins like vitamin A, vitamin B1, vitamin B2, vitamin B3, vitamin C and vitamin E are found in green tea.

    Health Benefits: The health benefits from Green Tea are primarily due to its anti oxidizing properties which come from its Caffeine, Catechin Polyphenols and Theonine. These health benefits can be listed as under;


    • Anti Ageing: The free radicals created in body are responsible for corroding the body, i.e. for ageing and the related symptoms. The main job of anti oxidants is to neutralize the oxidants or free radicals present in the body and green tea is very rich in anti oxidants. The Catechin Polyphenols present in green tea are mainly responsible for the anti oxidizing effects, the most powerful among them being the Epigallocatechin Gallate. Thus, regular consumption of green tea can effectively delay symptoms of ageing.



    • Stimulating: The main reason behind acceptance of any kind of tea, be it green, black or Wwwhe, by human civilizations and its popularity, is its stimulating effect. This effect, again, is due to the Caffeine and Tannins present in it. Caffeine & Tannins, despite their adverse effects on health in the long run, are very good as stimulants. That is why; a cup of tea makes you feel fresh and highly energized. Tea is ideal to counter fatigue, laziness, sleepiness and lack of energy and to improve blood circulation. No doubt it is so popular with any kind of professionals, housewives and students.



    • Immunity Boosting: Researches show that people who regularly drink green tea do not fall prey to common bacterial and viral infections easily, and even if they do, it is far less frequently than those not consuming it. The message is clear. Green Tea boosts immunity. The Catechins present in green tea prevent bacterial and virus from attaching themselves to cell walls and thus infecting them. These Catechins also counter the toxins released by microbes. This anti microbial property also protects from bad breathe, dysentery, diarrhoea, tooth decay, indigestion, flu, cough & cold, colitis etc. which are caused by microbial & fungal action.



    • Astringency: This is yet another benefit from green tea. It triggers contraction in muscles and tissues and tones up muscles and skin. Even if you do not wish to drink green tea, a mere mouthwash with this daily will cause sufficient contraction in gums to keep them firm and tight on teeth and thus prevent loosening and falling of teeth for long. Wash your hair with it and see them grow stronger each day.



    • Anti Carcinogenic: Apart from ageing, free radicals are also responsible for causing certain types of cancer. The Catechins present in green tea neutralize these free radicals, prevent formation of carcinogens like nitrosamines and reduce the chances of cancer. Green tea is now being clinically used in prevention of cancer, particularly those pertaining to colon, rectum, pancreas and intestines.



    • Reducing Cholesterol: Green tea has been seen effective in reducing cholesterol level to some extent, probably due to its alkaline nature.
    • Cardiac & Arterial Health: Certain components in green tea prevents thickening of blood, thereby reducing chances of Arterial Sclerosis, Thrombosis, Cardiac and Cerebral Strokes etc.



    • Anti Diabetic: If not taken with sugar, the alkaline nature of green tea helps reduce the blood glucose level. Moreover, the anti oxidizing and astringent nature of its constituents ensure good health and better functioning of pancreas and thereby better secretion of insulin and resultant better decomposing and absorption of sugar. This helps keep diabetes away.



    • Weight Loss: You believe it or not, but green tea also helps lose weight by enhancing rate of metabolism and thereby faster consumption of fat storage of the body. Recently green tea has replaced other beverages in the webstern world as its helps in weight loss. Drink a cup full of green tea in the morning and you are sure to lose a few pounds of excess weight.



    • Stamina & Endurance Booster: You can prove this yourself. Just have a cup of hot green tea after rigorous exercise and within no time you will be ready for a few more sets. Further, it effectively counters muscular pain due to over exercise of muscles. Haven’t seen any athlete taking this? You must visit Japan & China then, where it is a popular drink among practitioners of Martial Arts.



    • De intoxicating: Green tea is the best cure to get rid of hangovers and fatigue caused by consumption of alcoholic beverages and lack of sleep due to late night parties. A big glass of green tea with lemon, and lo, feels as if there was no hangover at all. Green tea with Lemon juice is a very good and popular remedy to cut effect of alcohols effect instantly.

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    Last edited: Jul 9, 2012

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