With people’s love for tea, more and more people pay attention to the prevention of tea and cancer. So especially green tea plays an important role in it.Let’s see how tea prevents cancer.
what is green tea >>>
Green tea is one of the main kinds of tea in China. It refers to the products made by the typical technology of tea leaves or buds ferment, don’t kill,shape or drie. The colour and lustre of its products, after brewing tea soup more preserved the green main tone of fresh tea.
What are the ingredients of tea >>>
Tea have polyphenols, alkaloids, amino acids, carbohydrates, proteins, chlorophyll, volatile organic compounds , fluoride, aluminum, minerals, and trace elements .
The polyphenols, a large group of plant chemicals that includes the catechins. In medical science, we traditionally attributed catechins is responsible for the health benefits especially green tea. The most active and abundant catechin in green tea is epigallocatechin-3-gallate (EGCG)
Tea Polyphenols and Catechins are Antioxidants.>>>
Tea polyphenols are bioactive plant compounds that include catechins, which are believed to be responsible for many of the promising health benefits attributed to green tea. The most active and abundant catechin in green tea is known as EGCG. Epigallocatechin (ECG) is another catechin. Both have high antioxidant activity – together they act to neutralize many harmful “free radicals” in our body.
How might tea help prevent cancer?>>>
Among their many biological activities, the predominant polyphenols in green tea―EGCG, EGC, ECG, and EC―and the theaflavins and thearubigins in black teas have antioxidant activity . These chemicals,have substantial free radical scavenging activity and may protect cells from DNA damage caused by reactive oxygen species. Tea polyphenols also had shown to inhibit tumor cell proliferation and induce apoptosis in studies. tea catechins had shown to inhibit angiogenesis and tumor cell invasiveness.
In addition, tea polyphenols may protect against damage caused by ultraviolet (UV) B radiation, and they may modulate immune system function .Furthermore, green teas had shown to activate detoxification enzymes, such as glutathione S-transferase and quinone reductase, that may help protect against tumor development.
Anti-Cancer Activities of Green Tea>>>
Laboratory studies have shown that green tea:
First ,Slows down or completely prevents growth of cancer cells
Second ,Blocks formation of new blood vessels that cancers need to feed themselves with nutrients
Third,May protect the body’s cells against ultraviolet (UV) damage
Fourth,May boost the immune system
Fifth,Appears to trigger natural detox enzymes in our body that help to protect against cancer formation