Tea is the traditional drink of our country, and tea also has a very high nutritional value. How much tea is put determines the concentration of tea. Many people like to drink strong tea, but is it good to drink strong tea? Can you really lose weight by drinking strong tea? Let's take a look.
Is drinking strong tea harmful to your health
Although there are many benefits to drink tea, it is not recommended to drink it often! In particular, people with bad stomach and intestines are not recommended to drink strong tea. Drinking strong tea will dilute the gastric juice, reduce the concentration of gastric juice, make the gastric juice unable to digest food normally, resulting in dyspepsia, abdominal distention, abdominal pain and other diseases. People with poor gastric function will even cause duodenal ulcer. The old people who drink strong tea for a long time are easy to fracture, cause brain neurasthenia, easily produce constipation, and may cause iron deficiency anemia.
1. The effect of strong tea on heart
Strong tea is harmful to heart health. It contains 2% - 5% caffeine, while the content of caffeine in strong tea is higher. A cup of strong tea contains about 100 milligrams of caffeine. Excessive caffeine can lead to hyperactivity of nerves and insomnia. At the same time, it can also cause tachycardia, premature beat and atrial fibrillation in patients with coronary heart disease.
2. The influence of strong tea on stomach
Drinking strong tea will lead to stomach disease and even gastric ulcer. The high concentration of caffeine and theophylline in strong tea will increase the excitability of the central nervous system, and then cause the acceleration of gastric peristalsis, the hypersecretion of gastric parietal cells, the increase of gastric acid, the enhancement of gastric mucosa stimulation, and easily lead to gastric ulcer. Caffeine can also be addictive and form a vicious circle.
3. Effect of strong tea on nutrient absorption
Strong tea hinders the absorption of nutrients by human body, because there are more tannins in strong tea. Tannins can be combined with protein, vitamin B1 and iron ions in food, so that these nutrients can not be absorbed normally, which is easy to cause the lack of nutrients in human body and produce corresponding symptoms, such as anemia, constipation, etc. Studies have shown that drinking strong tea can aggravate hypertension, heart disease, diabetes, nephritis, hepatitis and other conditions.
4. It is harmful for women to drink strong tea during menstruation, pregnancy, childbirth and lactation
Drinking strong tea during menstruation will lead to anemia. Drinking strong tea for pregnant women will lead to increased urination, affect the absorption of nutrition by the fetus, and lead to fetal dysplasia. Drinking strong tea during childbirth will lead to exhaustion during childbirth. Drinking strong tea during lactation will stimulate the baby, cause excitement, and affect the development of the child.
Can you lose weight by drinking strong tea
Drinking tea can lose weight. You don't need to drink strong tea. After half an hour after each meal, drinking some tea in proper amount has certain weight loss function, but it can't take a lot of empty clothes, which is not good for the stomach. It's recommended to pay more attention to diet at ordinary times.
1. Choose good tea
Drinking tea to lose weight does not mean that all tea can help lose weight. Some tea does have a good effect of moistening intestines and defecating, which is more suitable for people who lose weight. Tea contains tea polyphenols, which have a very good effect on reducing fat. Nowadays, there are many kinds of tea on the market, such as Tieguanyin, Biluochun, Pu'er and black tea. There are also many flower tea with nourishing beauty, or barley tea with clearing intestines. In general, you can choose according to your own preferences, not necessarily the most expensive, as long as you choose a better tea. For example, Pu'er has less calories, and the coffee in tea can enhance the body's fat burning effect and promote weight loss.
2. A pot of tea for work
In addition to choosing tea, when to drink tea is also very important. In the time of work or rest, you can often drink tea, which contains a lot of food fiber, and these food fiber can not be digested, will stay in the stomach of the human body, so as to reduce the sense of hunger. More importantly, drinking tea can also burn fat, because most of the tea contains vitamin B1, which can fully burn the body fat and convert it into heat energy, so that the weight of the dieter will slowly fall, achieving the effect of slimming.
Tea taboo
1. Tea quantity
Under normal circumstances, it is advisable for each person to drink 2-6 grams of tea every day. Although tea contains a variety of vitamins and amino acids, drinking tea has a certain role in clearing oil and relieving greasiness, enhancing nerve excitation and eating and diuresis, but not drinking more is better, and not all people are suitable for drinking tea.
Generally speaking, it is more appropriate to drink 2-3 grams of tea once or twice a day. It is not suitable for patients with neurasthenia, insomnia, hyperthyroidism, tuberculosis, heart disease, stomach disease, and intestinal ulcer. It is also not suitable for lactating and pregnant women and infants.
2. Don't drink too much tea
Drinking strong tea will increase the "excitability" of human body, which will cause adverse effects on cardiovascular system and nervous system. People with cardiovascular disease may have tachycardia or even arrhythmia after drinking strong tea, resulting in repeated disease. Therefore, it is generally better not to drink strong tea. Some people are used to drinking strong tea because they have been drinking tea for a long time and have tolerated the exciting effect. However, too strong tea is also harmful to the stomach, intestines, liver and kidney. Even those who are used to drinking tea in ordinary times should not drink too strong tea.
3. Don't drink tea before going to bed
This is more important for early tea drinkers. Many people drink tea before going to bed, it becomes very difficult to fall asleep, and even seriously affects the mental state of the next day. People with neurasthenia or insomnia should pay special attention.
4. Don't drink a lot of tea before meals
A small amount of tea before or during a meal is not harmful, but if you drink a large amount of tea or drink too much tea, it will affect the absorption of many major elements (such as calcium, etc.) and trace elements (such as iron, zinc, etc.). Special attention should be paid not to drink tea at the same time when drinking milk or other dairy products. Theophylline and tannic acid in tea will combine with calcium element in dairy products to form calcium salt which is insoluble in water and will be discharged from the body, which will greatly reduce the nutritional value of dairy products.
5. New tea is not suitable for drinking
From the perspective of nutrition, the most fresh tea is not necessarily the best in terms of its nutritional composition, because the so-called new tea refers to the tea that has been picked for less than a month. Because these tea leaves have not been placed for a period of time, some substances that have adverse effects on the body, such as polyphenols, alcohols, aldehydes, have not been completely oxidized. If you drink new tea for a long time, Diarrhea, abdominal distention and other uncomfortable reactions may occur. Too fresh tea is even worse for patients, such as those suffering from gastric acid deficiency or elderly patients with chronic gastric ulcer, who are not suitable for drinking new tea. New tea will stimulate their gastric mucosa, produce gastrointestinal discomfort, and even aggravate the disease.
6. Don't drink tea overnight
Tea put for a long time, not only will lose vitamins and other nutrients, and prone to rancid deterioration, or even mildew. Tannic acid in tea will also become a strong irritant oxide, which is easy to hurt the spleen and stomach and cause inflammation.