But it should be emphasized that drinking tea is not a substitute for medicine. Never stop taking medicine because of drinking tea!
What substances in tea can affect blood pressure? (1) tea polyphenols: lowering blood pressure
Tea polyphenols are the main components of tea color, aroma and health care function. In some experiments, researchers found that tea polyphenols can inhibit the oxidation process, eliminate vasospasm, maintain the elasticity of blood vessel wall, increase the effective diameter of blood vessels, increase the accommodation space of blood and lower blood pressure.
The lighter the degree of tea fermentation, the more tea polyphenols will be retained. Fresh tea (green tea) forms white tea, yellow tea, green tea (oolong tea), black tea and black tea in turn according to the degree of fermentation. The gradual change and deepening of the color of tea soup is actually the result of the gradual oxidation of tea polyphenols into theaflavins and thearubigins.
Therefore, it is suggested that patients with hypertension drink green tea, white tea and yellow tea with high tea polyphenols content.
(2) Caffeine: raising blood pressure.
In addition to tea polyphenols, tea also contains caffeine that affects blood pressure. It can stimulate the central nervous system and cause excitement, affecting cardiovascular hemodynamics and electrophysiological characteristics of the heart.
For people who don't take caffeine regularly, caffeine can raise blood pressure as high as 10mmHg. In addition, caffeine can also strengthen the blood pressure increase caused by stress. These reactions are more obvious in hypertensive patients who don't take caffeine regularly, and their blood pressure increase is more than 1.5 times of the blood pressure change of ideal blood pressure subjects.
However, the above effects are limited to people who seldom consume caffeine. If you take caffeine for a long time, it will have little effect on blood pressure. Many studies have shown that coffee intake has nothing to do with increased blood pressure or the incidence of hypertension. According to NHS data, drinking 6 cups of coffee or tea leaves a day has nothing to do with the increased risk of hypertension. This can be understood as the human body has been "immune" to caffeine for a long time.
Because of this tolerance, it is suggested that hypertensive patients gradually increase the concentration of tea (not too strong) or drink tea, and do not change the concentration of tea at will, so as not to make blood pressure suddenly rise and cause danger.
Patients with hypertension (1) should avoid three time points when drinking tea.
(2) Don't drink strong tea
Caffeine in strong tea will excite the central nervous system for a short time, which can cause brain excitement, anxiety, insomnia, palpitations and other discomfort, thus raising blood pressure. Especially when sleeping in the afternoon and at night, it is easy to cause insomnia, which in turn will cause human fatigue and aggravate high blood pressure.
(3) Don't drink too much
A large amount of liquid entering blood vessels will increase the burden on the heart and kidneys, and the exciting effect of caffeine will make people's heart beat faster and blood pressure rise. In addition, drinking a lot of strong tea will dilute gastric juice, leading to indigestion, abdominal distension, abdominal pain and other symptoms. Old people with bad stomachs should pay special attention.
(4) Don't drink alcohol when taking medicine.
The substances in tea will interact with some drugs. Especially elderly friends should not take hypnotic, sedative and other drugs, as well as iron-containing blood-enriching drugs, enzyme preparations, protein and other drugs.
(5) Don't drink overnight tea
If the tea leaves are soaked for too long, the tea soup will deteriorate due to oxidation and microbial reproduction, which is harmful to the body and the taste will be greatly reduced.
Recommend a classic good tea, suitable for people: people with three high blood sugar, blood lipid and blood pressure.
Is composed of 8 kinds of raw materials, is a natural plant, and does not add scented tea.
1. Huang Ju: Chamomile with pleasant fragrance is suitable for making tea, and Huang Ju from Huangshan Mountain is the best choice.
2. Bitter gourd: Bitter gourd contains a variety of nutrients, such as vitamins A, B 1, B2, C, and mineral calcium.
3. hawthorn tea: Hawthorn in hawthorn tea contains many vitamins, maslinic acid, tartaric acid and malic acid.
4. Mulberry leaf tea: Mulberry leaf is also called "Xiancao", and Japanese people call mulberry leaf tea longevity tea.
5. Cassia seed: Cassia seed, also known as "Cassia seed", contains many vitamins and rich amino acids.
Burdock tea: Burdock contains inulin, cellulose, protein, calcium, phosphorus, iron and other vitamins needed by human body.
7. Buckwheat tea: Buckwheat tea contains a variety of trace elements needed by the human body, such as calcium, phosphorus, iron and other amino acids.
8. Pueraria lobata: The general population can eat it. Suitable for people's blood pressure, blood lipid and blood sugar.
After seeing this topic, I can't help complaining.
Although I know that I may be sprayed by many people, in order to prevent more people from going astray, I still have to take the world by storm.
10 years ago, a friend's father, who was about 60 years old at that time, suffered from hypertension all the year round.
He never uses antihypertensive drugs because he has no obvious symptoms such as headache and dizziness.
In addition to not using antihypertensive drugs, he also believes that drinking some kind of tea can lower blood pressure.
This kind of tea was produced in Huangshan area, which was less than a catty in 300 yuan at that time.
My friend and I tried to persuade him many times, but he wouldn't listen. The reason is that he has no obvious symptoms even if he does not take antihypertensive drugs. Tea is less than a catty in 300 yuan, so you can drink it for a long time, which is more cost-effective than taking medicine, and you don't have to worry about others deceiving yourself in order to sell tea.
It is true that he didn't buy this kind of tea, because some people want to profit from it, but it is not true that there are no symptoms.
Four years ago, misfortune finally happened. He fell down on the way to the market and was taken to the hospital, where he was diagnosed with cerebral hemorrhage.
Fortunately, the amount of cerebral hemorrhage is not much, less than 20 ml.
After active treatment, he was discharged from hospital. After leaving the hospital, he never insisted on drinking tea to lower blood pressure, but took antihypertensive drugs honestly and got on the right track.
I have many such situations in my actual work in CNOOC.
These patients hold the misconception that antihypertensive drugs are addictive and have adverse reactions, and firmly believe in the rumor of drinking tea to lower blood pressure, constantly creating one tragedy after another.
In fact, for patients with hypertension, we should first establish good living habits, such as quitting smoking and drinking, proper exercise, weight control and low-salt and low-fat diet. The second is to measure blood pressure regularly and use antihypertensive drugs according to doctor's advice.
As for the so-called example of controlling hypertension by drinking tea, there are people in the industry.
Either a liar who pretends to lie in order to sell tea; Either you used antihypertensive drugs when drinking tea; Either the blood pressure is not high and good living habits have been established.
If you just put your high blood pressure on all kinds of tea, then only regret is waiting for you!
One treatment for hypertension is called tea therapy. However, what kind of tea to drink is still particular. Hypertension should choose the following herbal teas.
(1) hawthorn lotus leaf tea: hawthorn 15g, lotus leaf 12g. Cut hawthorn and lotus leaves into pieces, put them in a casserole and fry them in water. Drink tea instead. Efficacy: promoting blood circulation, removing blood stasis, lowering blood pressure and lipid. It is especially suitable for people with hypertension, hyperlipidemia, coronary heart disease and obesity.
(2) Hawthorn Chrysanthemum Tea: raw hawthorn slices, cassia seed each 15g, chrysanthemum 10g, and proper amount of sugar. Boil the first three kinds of water to get juice, add sugar and drink tea instead. Every day 1 dose. Fourth, the therapeutic effect of traditional Chinese medicine: dispelling wind and dissipating heat, calming the liver and lowering blood pressure.
(3) Hawthorn Muxiang tea: black tea 15g, stir-fried hawthorn 25g, radix aucklandiae 6g and sugar 20g. Decoct the medicine to about 500 ml, add sugar and stir well. Efficacy: regulating qi and regulating middle energizer, promoting digestion and stopping dysentery, and lowering blood pressure and lipid.
(4) Banana tea: 50g banana, appropriate amount of tea and sugar, peeled and ground banana, put into the same amount of tea, and then add appropriate amount of sugar, one cup each time, three times a day. Efficacy: moistening lung and relieving hangover, clearing away heat and moistening dryness, promoting blood circulation and lowering blood pressure, suitable for coronary heart disease, hypertension and arteriosclerosis.
(5) Apple honey tea: 50g apple peel, 25g honey and green tea1g. Wash the apple peel, add 450m 1 water, boil for 5 minutes, and add tea and honey. Efficacy: nourishing yin and clearing heat, lowering blood pressure.
(6) Chrysanthemum and Sophora japonica tea: gentian 10g, chrysanthemum 6g, Sophora japonica 6g and green tea 6g. Mix the medicines evenly, put them in a teapot and brew them with boiling water 10min. Efficacy: nourishing liver and improving eyesight, nourishing yin and moistening dryness. It has a good curative effect on headache, dizziness, red eyes, swelling and pain, fundus hemorrhage and nosebleeds caused by early hypertension.
(7) Lycium barbarum mulberry chrysanthemum tea: mulberry leaf 5g, dried chrysanthemum 5g, Lycium barbarum 6g and cassia seed 3g. Parching Semen Cassiae, drying Folium Mori, cleaning, adding Flos Chrysanthemi and Semen Cassiae into a teacup, and brewing in boiling water for15min. Efficacy: clearing liver and improving eyesight, suitable for hypertension, hyperlipidemia, liver-fire constipation and other diseases.
(8) Sambo tea: equally divide Pu 'er tea, chrysanthemum and Siraitia grosvenorii, grind them into coarse powder, put them into gauze bags, each 20g, and brew them in boiling water, one bag at a time. Reduce blood pressure and blood lipid, and is suitable for the prevention and treatment of hypertension and hyperlipidemia.
(9) Qian Qiu tea: 500g of dried cypress leaves. Every spring, the tender leaves of cypress are collected, the fibrous roots are removed and washed, put into a cup and brewed with boiling water. Efficacy: clearing heat, calming liver and lowering blood pressure.
(10) cogongrass rhizome tea: cogongrass rhizome is 250g, and sugar is appropriate. Cut the cogongrass rhizome, wash and chop it, put it into a casserole, add 4 bowls of water and appropriate sugar, and fry it into 2 bowls of concentrated solution. Efficacy: clearing away heat, quenching thirst, promoting diuresis, relieving swelling, cooling blood, stopping bleeding, lowering blood lipid and blood pressure.
(1 1) Gemini tea: 50g cassia seed, 50g medlar 15g, 50g rock sugar. Stir-fry Semen Cassiae, mash it, put it in a teapot with Lycium barbarum and crystal sugar, pour it into boiling water, cover it with 15 minutes, and drink tea often.
According to your question, we inquired about some domestic scientific research achievements. Summarized as follows:
1, it is useful to drink specific tea for a long time.
2. From the current research results, drinking tea containing tea polyphenols, such as Guangxi Yaoshan sweet tea, has an excellent relieving effect. You can refer to the world science and technology-modernization of traditional Chinese medicine, 20 15 and 20 14 of Guangxi Medical University.
3. Judging from the achievements of traditional Chinese medicine, Kuding tea also has quite good curative effect. Please refer to China Journal of Ethnic and Folk Medicine 1998 for reference.
It should be noted that drinking tea is not a substitute for medication.
Patients with hypertension can drink tea properly, and some teas also have the function of lowering blood pressure and preventing and treating hypertension.
Tea polyphenols in tea are flavonoids, which can stimulate blood vessels to a certain extent, thus enhancing the elasticity and permeability of blood vessels, thus playing a role in lowering blood pressure and preventing and treating hypertension. At the same time, there is another component called catechin in tea polyphenols, which can obviously lower blood pressure.
There are many mineral components in tea, such as potassium, iron, magnesium, zinc and calcium, which can also lower blood pressure. In addition, tea can also help to prevent and treat hypertension and cardiovascular and cerebrovascular complications by promoting fibrinolysis, lowering serum total cholesterol level and inhibiting platelet aggregation.
How to drink antihypertensive tea is more effective?
There are many kinds of tea in the market, including scented tea, green tea and oolong tea. Although there are many kinds of tea, it is very effective for human health. Moreover, for patients with hypertension, soaking hawthorn, Schisandra chinensis, chrysanthemum, Eucommia ulmoides and lotus plumule in green tea can play a more favorable role in lowering blood pressure.
Although drinking tea is good, drinking high blood pressure is not without scruples!
Although tea can lower blood pressure, friends with high blood pressure should not be reckless. Pay attention to the right amount, try not to drink strong tea, and don't get into the habit of drinking strong tea. Because the caffeine contained in tea can speed up the heart rate and promote nerve excitement, drinking too much strong tea will lead to an increase in blood pressure. Therefore, it is best for patients with hypertension to drink light tea, preferably green tea with less caffeine.
Hypertension can drink Anhua black tea, because Anhua black tea drops three highs.
You can drink tea for hypertension, because tea contains tea polyphenols, which can increase blood vessel elasticity and reduce cholesterol and low density lipoprotein in the blood. The contents of tea polyphenols in six kinds of tea are different.
Therefore, it is recommended that:
Hypertensive patients and people with elevated blood pressure can drink light tea properly, which is beneficial to the stability of blood pressure, but not too strong tea, because the caffeine content of strong tea increases, which can excite the central nervous system, accelerate the heart rate and increase the burden on the heart.
For people with hypertension, black tea is recommended here.
Because black tea has the functions of lowering blood pressure, lowering blood fat, anticoagulation, promoting fibrinogen dissolution and avoiding platelet adhesion and aggregation; In addition, black tea also helps to lower blood sugar, regulate fat metabolism, and has the effects of helping digestion, supplementing vitamins, diminishing inflammation and sterilizing. For people with hypertension, drinking more black tea has a certain effect on controlling blood pressure.
According to the degree of fermentation, tea can be divided into six categories: green tea, white tea, yellow tea, oolong tea, black tea and black tea. Black tea belongs to post-fermented tea, which is named after the appearance of finished tea is black. The fundamental feature of black tea is "red soup with brown leaves, mellow and vigorous".
Black tea is coarse and old in texture. After a long period of accumulation and fermentation during processing, the tea leaves are dark brown, and finally pressed into bricks for easy preservation. In ancient times, black tea was mainly sold to frontier areas, which was a daily necessity of Tibetan, Mongolian, Uygur and other fraternal peoples, and also an important product of the circulation of the ancient tea-horse road.
The main producing areas of black tea are Shaanxi, Sichuan, Yunnan, Hunan, Hubei, Guangxi and other places. The main types of black tea are Xianyang Poria Brick Tea, Sichuan Tibetan Tea, Yunnan Pu 'er Tea, Hunan Black Tea, Hubei Old Brick Tea and Guangxi Liubao Tea.
Finally, it is important to point out that tea is not medicine after all, but can only be used as an auxiliary diet. Therefore, patients with hypertension should not only pay attention to diet, but also take medicine according to the doctor's advice.
You can drink tea for hypertension. However, you should drink it in moderation, not too strong or too much. By analyzing the main components and effects of tea, we can know that drinking tea has a certain effect on patients with hypertension.
The main components and functions of tea are as follows:
1, tea polyphenols.
Tea polyphenols are the general name of polyphenols in tea, including catechins, flavanols, anthocyanins, flavonoids, flavonols and phenolic acids. Catechin accounts for 60-80%. It is one of the main components with health care function in tea. It has antioxidant, blood pressure lowering, antibacterial, antimutagenic, anticancer, stroke prevention, atherosclerosis and cardiovascular diseases.
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2. Caffeine
It has the functions of nerve excitation, diuresis and cardiotonic.
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3. Theanine
It is a unique amino acid in tea, which has the functions of lowering blood pressure, calming and relieving psychological pressure.
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4.b vitamins
It can increase skin elasticity and maintain the normal functions of heart, nerve, digestive system and retina.
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5, vitamin C.
Prevent and improve scurvy, increase body resistance and promote wound healing.
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6, theaflavins
It can reduce blood lipid, protect cardiovascular system and prevent arteriosclerosis.
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7. vitamin K.
Promote the synthesis of liver coagulation factors.
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8. Tea polysaccharide
Enhance immunity and lower blood sugar.
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9. Aromatic substances
Sedative, analgesic, sleeping, relaxing, antibacterial and anti-inflammatory.
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10, tea saponin
Lowering cholesterol and resisting bacteria.
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1 1, fluoride
Fixed teeth
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From the above substances contained in tea and their functions, we can know that tea polyphenols and theanine contained in tea have the function of lowering blood pressure, while theaflavins and tea polysaccharides have the functions of lowering blood fat, lowering blood sugar and protecting cardiovascular system. It can be seen that many components in tea play an auxiliary role in lowering blood pressure in patients with hypertension.
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At the same time, vitamins, aromatic substances, tea saponin and fluoride in tea are also beneficial to body and mind, which can increase the body's resistance, diminish inflammation and sterilize, and make people relax. Therefore, drinking tea is beneficial to patients with hypertension.
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But we should also pay attention to caffeine in tea, which can excite nerves, cause brain excitement, anxiety, insomnia, palpitations and other discomfort, and even lead to an increase in blood pressure. ?
Due to the different processing techniques of different teas, the content of theophylline in different teas is also different. Studies have shown that the content of theophylline in black tea and green tea is high, and patients with hypertension can choose white tea, oolong tea and black tea to reduce caffeine intake.
It is suggested that patients with hypertension drink tea reasonably, and pay attention to the following situations:
Avoid drinking strong tea, drinking too much tea, drinking tea on an empty stomach and drinking tea before going to bed. Choose white tea, oolong tea and black tea, and drink less or no black tea and green tea.