Tea culture in China is very strong, in which green tea and black tea are two major tea families. Green tea is a very fresh drink in the eyes of many of us, and many of us like the taste of green tea very much. In contrast, black tea may receive less attention. But black tea is also good for our health. Black tea can fight cancer.

First, the common effects of green tea

Tea culture in China is very strong, among which green tea is the largest kind of tea. Tea people first drank green tea without fermentation, so both the finished tea and the brewed tea soup had the green color of new tea. Regular drinking has many benefits to human health.

1 can delay aging. Tea contains a substance called tea polyphenols, which has strong physiological activity and antioxidant capacity, so it can effectively resist aging. Tea can be regarded as a natural scavenger of human free radicals.

Green tea can inhibit the occurrence of cardiovascular and cerebrovascular diseases. This is because tea polyphenols can promote fat metabolism in the body. However, fat is the main cause of "three highs" in human body, and "three highs" can easily lead to cardiovascular and cerebrovascular diseases. Therefore, drinking green tea regularly is very helpful to prevent cardiovascular and cerebrovascular diseases.

3 can prevent the occurrence of cancer. Tea polyphenols contained in tea can prevent a variety of songs that may cause cancer in the body, and have certain lethality to a variety of cancer cells.

4 can diminish inflammation and stop diarrhea. Tea polyphenols have a very obvious killing and inhibiting effect on viruses. In medicine, people have used it to treat diseases such as influenza and dysentery, and the effect is very good.

5 Be able to beauty beauty. The main use method of tea beauty is to wash your face with it, which can control oil and shrink pores, prevent skin aging, and also have a good effect on reducing the damage of ultraviolet rays to the skin.

6 refresh your mind. Tea contains a certain amount of caffeine, which can enhance the excitability of cerebral cortex, promote the nerve center to be in an excited state, and achieve the effect of clearing the heart and refreshing.

7 protect your teeth. Tea is an alkaline drink, which contains a certain amount of fluorine, which can reduce the absorption of calcium by human body, so it has a good effect on preventing dental caries and protecting teeth.

Second, the common effects of black tea

1, preventing influenza

Related studies have found that long-term gargling with black tea or direct drinking can effectively prevent influenza; Black tea is rich in trace element potassium. After brewing, 70% of potassium is dissolved in tea, so it can effectively enhance the blood circulation of the heart and reduce the consumption of calcium in the body. But I suggest that when drinking black tea, remember not to drink it on an empty stomach. Drinking black tea on an empty stomach will reduce digestive function.

2, help digestion of the stomach

From the point of fermentation, black tea belongs to fermented tea, which is milder than other teas, so it is less irritating to the body, even for people with weak spleen and stomach. Drinking black tea regularly can help digestion, stimulate appetite, protect health, relieve greasy, induce diuresis and reduce swelling. Drinking black tea has many benefits, but it must be drunk correctly. Drinking too much will make you dizzy and flustered.

3. Anti-cancer and anti-oxidation

Tea leaves will turn reddish brown after being left for a long time, which is due to the oxidation of tea polyphenols into reddish brown tea pigments. Studies have shown that tea polyphenols and tea pigments have strong anticancer and antioxidant effects. Drinking black tea often is very helpful to your health.

4. Vision

Tea polyphenols contained in black tea have antibacterial and anti-inflammatory effects. If red silk appears in your eyes, you can wash it with black tea several times a day. You will obviously find that your vision becomes clear and bright, and the red blood is reduced.

Step 5 stop bleeding

Black tea is rich in acid, which can prevent capillary bleeding. If you suffer from aphtha, stomatitis, eczema, bleeding gums, etc. You can rinse your mouth with black tea. It can also be used for bathing sores, abscesses and skin bleeding.

Step 6 stop itching

Wash your hair or brush your body with warm black tea. The fluorine contained in tea can quickly relieve itching and effectively prevent eczema.

7. Hair growth

Washing hair with black tea can also promote hair growth and eliminate dandruff. For example, if the eyebrows are too thin, you can brush your eyebrows with a brush dipped in black tea water every day. After a long time, you will find that your eyebrows become naturally thick and bright.

8. Fixing and cleaning teeth

After the fluoride in tea calcifies with the enamel of teeth, it will enhance the resistance to acidic substances and reduce the occurrence of tooth decay; Fluorine can also eliminate dental plaque, and it is best to rinse your mouth with tea two or three minutes after meals.

9, in addition to bad breath

Black tea contains essential oil and smells delicious. Rinsing a few mouthfuls of black tea before and after brushing your teeth in the morning or after meals can make your breath fresh, and gargling with black tea often can eliminate bad breath.

10, fishy and greasy

Black tea also has a particularly strong effect of removing fishy smell and greasy taste. It is refreshing to wash your mouth and hands after eating shrimps and crabs.

1 1, sun protection

If the skin is sunburned by the sun, you can gently wipe the sunburned skin with a towel soaked in black tea. Because tannic acid contained in black tea has astringent effect on skin, flavonoids in tea also have anti-radiation effect.

Third, the anti-cancer effects of green tea and black tea.

Many experiments have proved that green tea can induce cancer cells to commit suicide. Then, after black tea is processed, most of the tea polyphenols are oxidized. Is there any anticancer activity? A special study by the Tea and Health Research Office of Hunan Medical University confirmed that black tea also has a strong anti-cancer function.

Green tea is made by destroying enzymes in fresh tea leaves at high temperature and stopping fermentation. The brewed tea keeps the original green color of fresh tea, sweet and delicious, and Asians like to drink it. Black tea is fully fermented, and its color is black, bright and oily. The brewed tea is red and has a special aroma and taste, which is liked by people in Britain, America and Canada. Traditionally, polyphenols in green tea are considered as the main anticancer active components, but most of the tea polyphenols are oxidized to form tea pigments (called red tea polyphenols abroad) after processing. Has the anticancer activity of black tea decreased?

From 65438 to 0995, the World Food and Agriculture Organization launched a study on the influence of black tea on human health. The Health Research Association of Tea Trade, which is composed of Britain, the United States, Canada, Kenya, Indonesian and Sri Lanka, entrusted Cornell University Medical College, Boston University Medical College, new york State University Medical College and other research institutions to focus on the impact of black tea on cancer.

From 65438 to 0996, they achieved positive results in the study of the chemopreventive effect of tea pigment on some cancers. Since then, countries have been scrambling to study the pharmacology of black tea and its main component, tea pigment.

1997- 10, Cao Jin and Zhao Yan from the Tea and Health Laboratory of Hunan Medical University observed the biochemical and morphological changes of human acute promyelocytic leukemia cells (HL-60) treated with tea pigment from the perspective of molecular biology, and observed the typical changes of apoptosis of human acute promyelocytic leukemia cells: trapezoidal bands appeared in DNA, and apoptotic bodies appeared in cells; The results of flow cytometry further showed that the blocking effect of tea pigment on cancer cell differentiation mainly occurred in the early stage of cell proliferation and differentiation, that is, the early stage of DNA synthesis.

Under some harsh conditions, human cells are easy to mutate and become some cells that are not good for the human body, and sometimes they may become cancer cells. Therefore, we should pay full attention to anti-cancer work. We can actually drink some black tea or green tea to prevent it.

4. What is the difference between green tea and black tea?

Different applicable groups

The difference between black tea and green tea is not only in efficacy, but also in the applicable population.

1, people with stomach problems are more suitable for drinking black tea.

Because black tea is fermented and not cold, people with stomach problems can drink black tea instead of green tea, and it is best to drink tea after meals.

Drinking black tea will aggravate the symptoms of patients with gastric diseases.

Green tea is unfermented tea with high chlorophyll content, which is very irritating to the stomach. Drinking green tea will not only fail to exert other health care functions, but will aggravate the symptoms of stomach diseases, so patients with stomach diseases had better not drink green tea.

Different brewing temperatures

The difference between black tea and green tea is that the water temperature is different when making tea.

1, the water temperature of green tea should not be too high.

Green tea, especially the famous green tea with delicate buds and leaves, is generally brewed with boiling water of about 80 degrees. Too high water temperature is easy to destroy vitamin C in tea, and caffeine is easy to precipitate, which makes tea soup yellow and bitter.

Black tea needs to be brewed with boiling water.

Black tea should be brewed with 90- 100 degree boiling water. If the water temperature is low, there will be less effective components in tea and the taste of tea will be weak.

Do you really know the difference between black tea and green tea?

Different storage time

Green tea and black tea should be drunk in the same year, not just next season. Green tea should be kept for 1-2 months and black tea for 3-6 months.

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