Health benefits of Green Tea

Health benefits of Green Tea for cholesterol and heart health

By Veena Deo

This article talks about health benefits of Green Tea for heart, circulatory and cholesterol health.

The concept of revitalizing the human body at cellular level initiated in ancient India a process called RASAYANA, which is to keep all the body tissues fit enough to fight against self-destructive mechanism. Green Tea supplements and its extracts serve the best purpose to help body fight off these mechanisms called free radicals.

Read more on herbal supplements.

In our modern life many dietary supplements such as vitamin C and E, Selenium, Manganese, Copper, Zinc, Beta-Carotene etc., are widely used. However, the best one so far is Green tea (Camellia Sinensis) which is wide used all over the globe. Originally from China, Green tea migrated to Japan and the rest of the world by the 17th century. This has wide uses as it has the best and highly concentrated dose of antioxidants. There are three main varieties of tea, Green, Black, and Oolong. The difference between these teas is in their processing. Green tea is made from unfermented leaves and reportedly contains the highest concentration of powerful antioxidants called Polyphenols.


Green tea has been consumed for ages in India, China, Japan, and Thailand. In traditional Chinese and Indian medicine, practitioners use green tea as a stimulant, diuretic (to increase the excretion of urine), astringent (to control bleeding and help heal wounds), and to improve heart health. Green tea extensively studied in people, animals, and in labs. Results from these studies suggest that Green tea may be useful for the following health conditions like Atherosclerosis, Heart, Liver, Prostate, and Cholesterol problems and more.

Some known health benefits of Green tea are as follows-

Green tea contains catechin, caffeine, the amino acid theanine, butyric acid, Vitamins A, B1, B2, B3, C, E, chlorophyll, minerals, pectin, saccharides, and saponins.

Dried leaves can contain 7% to 14% of other flavonoids compounds. About two thirds of these flavonoids are flavonols. They known to be anti-histamine and anti-inflammatory and it has been found to be over 100 times more effective in neutralizing free radicals than vitamin C and 25 times more powerful than vitamin E.

Dried tea extract can contain 30% to 40% of catechins. The four main catechins are: Epicatechin, Epicatechin-3-gallate, Epigallocatechin, Epigallocatechin-3-gallate (also known as EGCG)

Green tea contains alkaloids known as methylxanthines such as caffeine, theobromine and theophylline.

Fresh leaves contain, on average, 3% to 4% of caffeine and very small amounts of the other methylxanthines.

Green tea contains several B vitamins and C vitamins. Being less processed than black tea, these vitamins left intact in the tea-making process.

Other green tea ingredients include 6% to 8% of minerals such as aluminum, fluoride and manganese.

Green tea also contains organic acids such as Gallic and quinic acids, and 10% to 15% of carbohydrate and small amount of volatiles.

Dried tea extract contains 4% to 6% of theanine, an amino acid found only in tea. It is what gives tea the characteristics flavor.

Studies have shown that theanine helps promote alpha brain waves, and increases brain's production of dopamine, yet relaxed. Theanine reaches maximum levels in the blood between 30 minutes to 2 hours after ingestion. The total duration of effect is estimated to be from 8 to 12 hours.

Green Tea contains fluorine that prevents cavities and strengthens teeth.

Researchers at the Department of Surgery, Division of Oncology and Center for Human Nutrition, University of California found that Green tea might contribute to its potential use for breast cancer treatment and/or prevention.

Department of Medicine, Case Western Reserve University researchers found that green tea constituent epigallocatechin-3-gallate inhibits topoisomerase I activity in human colon carcinoma cells.

Another study found that green tea extract is a potent nucleoside transport inhibitor, interfering with tumor cells' repair of DNA after chemotherapy. In animal models, green extract showed retardation of cataract progression.  

I hope the list of health benefits of Green tea is useful to all people.

Dr. Veena Deo is the moderator and editor of this article originally written by Dr. Satyanarayana, an Ayurvedic Doctor in India. All the information provided and on supplements above and opinions expressed above should not be construed as medical advise. This information is provided for educational purposes only. For questions email to







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