Say that you’re a tea lover or even someone just curious about green tea.
Either way, you went online to search ” Japanese green tea health benefits.”
The short answer is that it has multiple benefits. For example, it may help people with type 2 diabetes, irritated skin, and losing weight.
Some research has also shown that drinking green tea is good for your heart. In this article, let’s dive into the healthy components of Japanese green tea.

Japanese Green Tea Components & General Benefits
First of all, here are some of the many potential benefits known so far:
- Reducing cholesterol
- Cancer prevention
- Assistance in weight loss (fat burning)
- An aid against inflammatory skin conditions
- Improving heart health
- Lowering stroke risk
- Improve brain function
- Reducing bad breath
- Help prevent type 2 diabetes
- Assistance in relieving stress, etc
Now, let’s dive into the healthy substances found in most Japanese green teas that are responsible for these benefits:
Catechin
Catechin, also known as Tannin, is a bioflavonoid that can fight viruses and protect cells from damage. It helps to prevent cancer by stopping cancer cells from growing.
Catechin also has many sound effects that lower cholesterol. It helps clear out clogged veins and arteries, making blood flow easier.
According to some studies, Catechin may help prevent strokes, heart attacks, blood clots, and even heart disease.
Catechin also protects the whole body from damage caused by free radicals and other environmental toxins.
Catechin is made from tea leaves to protect themselves from UV rays.
So, even though all Japanese teas have Catechin, most Catechin is found in Sencha tea, and other teas are grown in full sunlight.
Catechin is best taken out of plants with water between 167 and 176F. (75 – 80C).
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Theanine
The amino acid Theanine, also called Teanin or L-Theanine, is only found in tea. Theanine strengthens alpha brain waves, linked to a calm but alert state of mind.
It helps calm the mind so you can concentrate on what you’re doing.
People say it helps with many health problems, like anxiety, insomnia, stress, depression, high cholesterol, and high blood pressure.
Theanine is sweet, and Catechin is bitter. These two factors balance the flavor.
Carefully planned and carried out experiments have shown that the amino acid Theanine positively affects the brain and improves memory by making more Dopamine.
People can use their mental abilities better when they are calm and at ease.
So try drinking a cup of green tea 40 minutes before you go to work or school.
You might be confused about how a cup of green tea with so much caffeine can help you relax. The Theanine is the answer.
Theanine reduces the effects of caffeine, which can make you nervous or overly excited (like when you drink coffee), and calms the mind.
So, even though green tea has a lot of caffeine, it doesn’t make you nervous or hyper because of the Theanine.
The tea leaves of Ichibancha (meaning the first pick of the year) and Karigane have a lot of Theanine.
These are made from the stems of high-grade tea.
Because the tea leaves for Gyokuro and Matcha are grown in the shade before they are picked, they have a lot of Theanine.
You get Theanine from both low and high temperatures.
Theanine is also said to help people lose weight, improve their ability to focus, and make their immune systems stronger.
Some experts also think that Theanine could protect against Alzheimer’s, stroke, and some types of cancer.
Also, there is hope that Theanine could help people lose weight, especially when combined with certain caffeine.
It is also often used as a supplement to help people lose weight.
Epigallocatechin gallate (EGCG)

Green tea has a lot of antioxidants, especially epigallocatechin gallate (EGCG).
In fact, a lot of people say that this special antioxidant is what makes green tea so good for you.
The antioxidant that burns fat helps speed up your body’s metabolism. Especially when it comes to visceral fat, which is fat stored in your organs.
Epigallocatechin gallate may also benefit overweight people with high blood pressure who risk getting type 2 diabetes.
This particular antioxidant may make it easier to burn or move other fats to cells that can burn them.
But research shows that epigallocatechin gallate may not help you lose fat. However, you may lose more fat by taking a bigger dose of it with caffeine.
Also, some studies show that people with glucose problems have lower glucose levels in their blood, which is often a sign of weight problems.
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Polyphenols
Tannins, theaflavins, catechins, and flavonoids are all types of polyphenols that you can find in tea. There are also epigallocatechin, epicatechin gallates, epigallocatechin gallates and epicatechins in green tea.
Flavanols like myricetin, kaempferol, and quercetin are also found in green tea.
People say that the polyphenols in green tea have a lot of health benefits, such as cleaning out many vital organs and preventing cancer.
The National Cancer Institute even says that lab and animal studies have shown that tea polyphenols stop tumor cells from growing, thus, dying.
Tea catechins have also been shown to stop tumor cells from spreading and making new blood vessels.
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Final Thoughts
You might want to drink green tea often to help you feel better, lose weight, and lower your risk of chronic diseases.
Green tea has some of the most antioxidants of any type of tea.
It has fewer calories and less caffeine than black tea and coffee because of how it is made.
Just make sure not to go overboard. Drinking any type of tea too often or in ungodly amounts will result in stomach acid problems.