Today, many people have the habit of drinking tea., and many researchers have devoted themselves to tea-drinking. Many scientific evidences have found that drinking tea can resist aging, prevent dementia, enhance immunity and prevent cancer.
●What are the health benefits of drinking tea?
Researchers who have been involved in clinical tea drinking for a long time pointed out that most research on tea drinking is to use green tea extraction to find the most beneficial tea polyphenol concentration.
And then investigate whether the tumor of the animal is reduced or regressed, or whether it has a positive impact on other health conditions, and They are all based on "hot tea" rather than cold brewed tea, overnight tea or iced bubble tea.
Studies have found that people who have the habit of drinking tea for more than 10 years have 2% to 6% more bone density than the average person, which is estimated to help reduce the chance of fractures.
Although tea contains caffeine, which is not good for bone, it also contains flavonoids and tea polyphenols, which can inhibit bone loss and promote cell activity.
People who drink more tea have lower blood pressure, blood lipids and cholesterol levels than those who drink less tea. drink tea. In addition, tea contains fluoride.
Gargling with tea can maintain the balance of bacteria in the oral cavity, and has anti-inflammatory and bactericidal effects.
Some studies have also found that catechins can inhibit the activity of Helicobacter pylori, and drinking tea can indirectly help peptic ulcers.
Moreover, long-term tea drinkers have a lower body fat ratio, 20% less than non-tea drinkers, and 2% less waist circumference.
●Fermented tea and unfermented tea
Tea can be classified according to the degree of fermentation, including unfermented green tea, semi-fermented oolong tea and fully fermented black tea.
The higher the degree of fermentation, the less catechin content will be due to oxidation, which will be converted into thearubigins and theaflavins. Assume that the catechin content of green tea is 100%, oolong tea is about 42%, and black tea is about 18%.
The more fermented the tea, the fewer the health benefits. The flavor and taste of fermented tea are better, and thearubigin and theaflavins are both flavonoids, which still have health care effects.
Green tea is unfermented tea, which contains the most catechins and the least caffeine; some fermented teas, such as Baozhong tea and oolong tea, have the second highest catechin content; fully fermented teas such as black tea have the least catechins, but Most caffeine.
According to the current research results, green tea has a better health care effect.
Clinical surveys have also shown that people who drink more than 2 cups of green tea a day are much less likely to develop senile dementias such as cognitive dysfunction than those who drink less than 3 cups a week.
Oolong tea removes oil and greasy, because it has the effect of breaking down triglycerides and inhibiting cholesterol. A study found that drinking oolong tea for a long time can prevent hearing deterioration in the elderly.
In addition, the extract of oolong tea can inhibit the growth of breast cancer cells and cause DNA apoptosis of cancer cells.
A research report pointed out that a cup of black tea actually contains the antioxidant components of 6 apples. People who drink a cup of black tea every day have a 21% reduction in the probability of cerebral thrombosis and cerebral vascular obstruction.
In particular, black tea has a lot of tannins, so it has an outstanding effect on lowering cholesterol and blood sugar. But remember one thing, no sugar and creamer.
