In recent years, domestic and abroad scientists especially the Japanese scientists confirmed that the chemical composition and mineral elements in Tie guan yin tea have special effects on human health, which reflects in the following aspects:
Anti-aging effect of Tie Guan Yin tea
Some Chinese and foreign scientific researches show that human aging is related to the over-oxidation of internal unsaturated fatty acids,which relates to the effects of free radicals. The free radicals with high chemical activity is going to over-oxidating unsaturated fatty acids, mutating or declining the cell function, causing tissue proliferation and necrosis which will lead to fatal disease. Over-oxidation of lipid is a devil for human health, but the culprit is the free radical. As long as the free radical is removed, the cells will get normal growth so you can live with health and longevity.
Normally, the commonly used antioxidants are vitamin C and vitamin E, what
can effectively prevent over-oxidation of unsaturated fatty acids. Japanese
researchers recently showed that phenolic compounds in dragon
well tea can prevent the excessive oxidating. While purine
alkaloids, can indirectly play a role in scavenging free radicals, so as to get
an anti-aging effect
Cancer is a kind of incurable disease seriously threaten to people’s health today.Therefore, reaserches on tie guan yin tea’s anti-cancer effect in recent years have aroused great interests and concerns. A few years ago, there was a report told that Shanghai people had reduced the incidence of esophageal cancer by drinking tea, which has aroused great repercussion in the world. Now the fact we can prevent cancer by drinking tea has been recognized by the world. However among all kinds of tea Tie Guan Yin has the best effect on anti-cancer.
As early as 1983, Professor Ao Tian Tuo nan from Okayama University in Japan
had already selected from the canceration of dozens of plant phenolic compounds,
and the results showed that: catechin (EGCG) has a strong changing activity in
anti-cancering. In the study that confirms Tieguanyin has the anti variation
effect, other scientists believe that polyphenols in dragon
well tea is the main active ingredient for it. In the study that
chemicals cause cancers, the Tieguanyin tea polyphenols’ anti-cancer function is
confirmed. In addition, vitamin C and vitamin E in Tieguanyin tea can prevent
the synthesis of the carcinogen nitrosamines , which plays a great role in
preventing and treating of cancer
It is generally considered that there are two kinds of disease harm human’s teeth: caries and periodontitis. Caries commonly known as tooth decay is a common dental frequently-occurring disease. Caries are caused by many reasons, one of the important reasons is that teeth are poorly in dental calcification so they are not hard enough and easy to be harmed. The fact that drinking tea may protect teeth is applied already in the ancient in China. Su Dongpo the famous poet in Song Dynasty had ever said in “Tea Log”: gargling with the stodgy tea may remove greasinese in your mouth, strong teeth and consumer beetle as well. The modern science analyzes that Tie guan yin tea contains rich of fluoride while other foods contain little. Around 40%-80% of fluoride in the tea dissolves in hot water, which can much easily connect with the calcium in teeth. As a result a layer of calcium fluoride will be formed on the surface of teeth, which can effect to anti-acid and prevent caries.
People in Japan had ever made a research on ratio of caries of school children in two neighbor villages, whose result showed that drinking Tie Guan Yin tea had a good effect preventing caries. For each school child each day, they drink one cup of Tie Guan Yin tea. If counted by 0.4mg of fluoride, for one year half of the the kids with caries were cured. 55% of the school children with caries of 100 schools counted in Japan had their disease greatly reduced after drinking the dragon well tea. This shows that drinking Tie Guan Yin tea has a preventing effect for those who are without caries while a curing effect for those who’d suffered from caries.
Tea is good drink to preventing heatstroke and keeping cool. According to Li Shizhen’s book “Compendium of Materia Medica”: tea tastes bitter and is cold, which can reduce pathogenic fire. In dog days of midsummer with the scorching sun hanging in the sky, you’ll feel cool with drinking a cup of cool or hot Tie Guan Yin tea. That because the tea polyphenol , carbohydrate, amino acids, pectin and vitamins in tea will have a chemical reaction with the saliva in mouth, which can moisture mouth so as to make the function of thirst quencher. Meanwhile, due to the function of caffeine in tea, large of energy is sheded through pores. It is reported that the heat sheded from pores by drinking a cup of tea is as much as 50 times of that in the tea, so that people can feel cool.
In the folk of Anxi it has been a long time that people using Tie Guan Yin to treat diarrhea and stomach pain. There are lots of records in Chinese ancient medical books that people used tea to treat disease like bacillary dysentery, dysentery, acute enteritis and acute gastritis. Why does dragon well tea have the bactericidal and antidiarrheal effect? That due to its tea polyphenol. Entering into the gastrointestinal, the tea polyphenol will relax the nervous function of intestinal to moderate bowel movement. At the same time, tea polyphenol can curd protein in intestinal, because bacteria itself is formed by protein, when the two meet, bacteria die immediately, which effects as protecting the gastrointestinal mucosal.
It is known by almost all the people that drinking tea may refresh and stimulate thinking. There were lots of records in China’s ancient medical books about that, and the writers and poets even the eminent monks from past used their pens to praise the refreshing and stimulating thinking effect of Tie Guan Yin tea. As the poem ”Presenting to Dongling Wang the 13rd” wrote by Bai Juyi who’s a famous poet says: Walking beside the pond in the moonlight shadow, undressing while feeling the wind through the bamboos. Drink wine if you want to drive the annoyance, savor tea if you want to drive drowsiness. The poem clearly mentioned that tea has the function of driving drowsiness. People especially some writers , poets and other mental laborers like drinking tea by knowing the truth that tea may stimulate thinking. For example, Balzac the literary giant of France, the Chinese American author Han Suyin and the famous Chinese writer Yao Xueyin all love drinking tea for stimulating thinking.The fact that dragon well tea can refresh minds and stimulate thinking depends on the caffeine in tea. Caffeine has a function of exhilarating central nervous system, stimulating thinking and promoting efficiency. Therefore, drinking tea may drive drowsiness, refresh minds, drive annoyance, relieve fatigue, and stimulate thinking, which can significantly improve the ability of oral defense and the reaction of mathematical thinking. Meanwhile, due to the polyphenols in Tie Guan Yin, the bad effect the pure caffeine makes is offset. That is one of the important reasons that the tea drinking history is of long standing and well established and eternal developing.