What is in Green Tea?

Although green tea originated from China, it has become commonly used in different countries across the world. Green tea is made from Camellia Sinensis leaves, and it is known to be bitter with full-bodied flavor. It is one of the healthiest beverages on the planet due to its components, such as antioxidants, that have great effects on the body system.

From catechins to caffeine, vitamins, minerals, and theanine, many of the ingredients found in green tea are healthful to the body. There are various health benefits of green tea that have endeared the beverage to many individuals, and these benefits include reducing the risk of cancer, improving brain function, burning of fats, killing of bacteria, encouraging weight loss, and lowering the risks of diabetes.


Catechin is one of most useful components of green tea as it provides varieties of health benefits. A few of the health benefits of catechin are:

  • Lowering of blood cholesterol level
  • Reduction of body fat
  • Prevention of cancer effect
  • Prevention of tooth decay and bad breath
  • Inhibition of high blood pressure

Also, catechin has antibacterial and anti-influenza effects.


One of the effects of caffeine in green tea is that it increases alertness.  If one consumes green tea and then does a moderate amount of physical exercise, the source of energy will be fat. In other words, before the muscles’ internal energy source is used, the presence of caffeine will enable fat to be used as an energy source; thereby, enhancing stamina. Green tea is said to be effective for the prevention of hangovers.

Theanine(amino acid)

Green tea contains theanine which has unique characteristics of being full-bodied with rich flavor and sweetness. It helps protect the neuronal cell and also has a relaxing effect on the body.

Green tea with the help of Theanine lowers blood pressure. This component of green tea limits the stimulant effect of caffeine in Green Tea. Green tea comprises of the naturally occurring compound, the amino acid L-theanine, which promotes the formation of the neurotransmitter called dopamine. Furthermore, it changes serotonin levels and increases the alpha waves in the brain.


Green tea comprises vitamins such as vitamin B2, vitamin C, Vitamin E and Folic Acid. The vitamin contents of green tea help in the maintenance of healthy skin and mucous membrane. They prevent of fetal neural tube defects (NTD) and arterial sclerosis.

Vitamin E serves as an antioxidant in green tea and facilitates the processes of digestion and metabolism in the body system. Through their antioxidant effects, they serve as cleaning mechanisms in the blood, making them important for the circulatory and cardiovascular systems.


Saponins are responsible for the strong bitterness and astringency associated with green tea. Saponins have anti-fungal, anti-inflammatory, and anti-allergy properties, and they lower blood pressure and prevent obesity as well as influenza.


Green tea also has fluorine that prevents tooth decay.


The type of minerals present in green tea includes potassium, calcium, phosphorus, manganese, etc. These minerals serve as bodily regulators.

Y-aminobutyric acid (GABA)

This γ-aminobutyric acid (GABA) is formed when raw leaves are left without oxygen. Its main function lies in its ability to reduce blood pressure.