health benefits

1.   Focus & Concentration : L-theanine (here referred to as theanine) is an amino acid that has a relaxing, but not sedating, effect. It is renowned for its ability to put you in the ideal state of “calm attentiveness.” It can sharpen focus and concentration, while reducing stress and enhancing overall well-being.

Theanine can interact with caffeine, allowing a smaller dose of caffeine to have a stronger effect in terms of boosting concentration and alertness. This may explain why tea seems to provide a stronger boost in alertness for some people than one would expect from its caffeine content alone.

2.  Prevents tooth decay and bad breath  Catechin  and fluorine limits the growth of the bacteria causing tooth decay and  freshens the mouth. This effect is best achieved by drinking it after meals.  

3.  Effectively burns body fat  Caffeine  promotes the metabolism of fat. Drinking green tea and engaging in physical activity 20-30 minutes afterwards burns up body fat but also acts as a muscle  stimulant.

4.  Beautifies the skin  Drinking  tea maintains the skin’s elasticity, and the vitamin C strengthens the  capillaries. It also improves the skin’s ability to retain warmth.

5.  Prevents hardening of the arteries and high blood pressure  Tea with  high catechin contents increase the levels of HLD (good cholesterol) in the  blood. Gamma-aminobutyric acid inhibits high blood pressure. 

6.  Protects against colds. Due to catechins, green tea strengthens the body’s defenses against infection, so  using it as a gargle protects against viruses, regardless of the type of  influenza.

7.  Antibacterial properties and acidification balance  Tea’s  strong antibacterial properties limit oxidation in the body and maintains a  good pH balance by promoting the body’s alkalinity, therefore helping fight against inflammations and pain due to body acidification.

8.  Prevents food poisoning  Catechin  has a powerful effect on bacteria causing food poisoning. It also regulates  intestinal functions.

9. Lower  blood glucose levels.  The  conjugated polysaccharide found in green tea helps to prevent diabetes.  

10.  Prevent aging  Green  tea suppress the production of free radicals and lipid peroxide, and  therefore prevents aging. Green tea has anti-oxidative effects.

There is  a direct link between the components of green tea and its taste. Some cultivars and some tea types have more or less umami, astringency or bitterness. Even more importantly, water temperature has a direct impact on  how those components are released.
Therefore, by controlling water  temperature, you can adjust the tea taste to your preference.

1) Amino acids release the umami taste and are easily dissolved regardless of the  temperature.

2) Astringency and bitterness are linked with caffein and catechin (tannin). Those are released at higher temperatures. Therefore, high quality tea should be prepared with a lower temperature.

Note that catechin and caffeine have both positive health impact, so they should not be avoided at all costs. Depending on your personal preferences, however,  you may want to make sure that not too much of them is released.

Should I drink green tea before going to bed? What about pregnant women or  infants?  
Green tea contains caffeine but not all kinds have the same amounts. It is recommended to choose a kind of tea with low caffeine levels (like Shira-ore), or simply use about half the amount of leaves. In Japan, in the tea farming areas, babies  are given watered down green tea to drink as soon as they start eating solid  foods (6-8 months).
Green  tea on an empty stomach  
Green tea rich in caffeine and catechin may be tough on an empty stomach. We recommend to drink weakly brewed teas in these cases.

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