What is the question of tea scale heavy metal in the health of tea drinking?

In principle, it is.

However, most people drink tea to taste the aroma of tea, if you stir more, maybe the tea is not so aromatic, and it is easy to have no taste after brewing.

For this, it is recommended that you use acidic ones, such as vinegar and the like, and wash them before soaking, which is better. Tea scale is actually mainly calcium carbonate and the like, and if you drink too much and enter the stomach, you will get all kinds of stones. As for the heavy metals in the water, as long as you soak them in boiling water, they will generally form scale when you boil the water first.

Core tip: Tea scale contains cadmium, lead, mercury, arsenic and other toxic substances and nitrite and other carcinogens, these substances enter people's digestive system, combined with protein, fatty acids, vitamins in food, not only hinder the absorption and digestion of these nutrients by the human body, but also damage the stomach and other organs.

China is the homeland of tea, and the history of planting, making and drinking tea has a long history. There has always been such a proverb among the people of our country: "A cup of tea in the morning will starve to death the medicine seller", which shows that the health care effect of tea is extraordinary.

At the same time, there is a saying in my country, "If you drink tea and don't wash the cup, the king of Hades will urge you." That is to say, although tea is good for health, the wrong tea drinking habits will bring the opposite results, and "not washing the tea cup frequently" is the most common one.

Li Hongzhu, an associate professor at Tianjin Institute of Pharmaceutical Research, told the "Life Times" reporter that if the tea is not drunk or put for a long time and is exposed to the air, the tea polyphenols in the tea and the metal elements in the tea rust will oxidize, forming tea scale, which is attached to the inner wall of the cup, and "tea scale" is the culprit that endangers human health. Because tea scale contains toxic substances such as cadmium, lead, mercury, arsenic, and carcinogens such as nitrite, these substances enter people's digestive system and combine with proteins, fatty acids, vitamins, etc. in food, which not only hinders the absorption and digestion of these nutrients by the human body, but also damages organs such as the stomach and intestines. In addition, teacups that are often not cleaned leave more limescale, which also contains a large amount of heavy metals, which is extremely bad for health.

Therefore, it is recommended to wash the cup carefully after each drink, even if there are no tea stains in the cup. If the cup has been filled with tea dirt, it can be removed in several ways: squeeze the toothpaste with an old toothbrush, and brush back and forth in the teapot or teacup, because the toothpaste has both stain remover and very fine friction agent, it is easy to wipe off the tea rust without damaging the pot and cup, and then rinse it with water after wiping; Soak in heated rice vinegar or soda for 24 hours and rinse repeatedly.

Pay special attention to the rim of the cup when cleaning, because the mixture of saliva and tea that remains on the outside of the cup is more likely to breed bacteria when exposed to the air.

A prominent problem of excessive heavy metals in tea. Lead pollution** includes: first, the lead content in the soil substrate is high, due to the increase in the amount of chemical fertilizer, the lead in the soil is easy to be absorbed by the roots of tea plants; Second, the concentration of lead in the atmosphere around the tea garden increases, which is closely related to the increase in the number of cars, and the exhaust gas emitted by the car contains a large amount of lead, which constitutes the pollution of tea trees in the tea plantation; The third is that the lead contained in the tea processing machinery is transferred to the tea during the tea processing process.

At present, the problem of excessive lead in tea has been basically solved, but it is still necessary to pay attention to its change dynamics.

At the same time, tea plants have the ability to enrich fluorine in the soil. Fluoride has a dual effect on human health, an appropriate amount of fluoride is beneficial to health, and excessive fluoride causes fluorosis. The daily intake is less than 3 3 mg, the incidence of dental caries is less, and too much is manifested by dental fluorosis and skeletal fluorosis; Fluoride is mainly absorbed through the gastrointestinal tract, with daily absorption of fluor50 deposited in teeth and bones, and 50% excreted through the kidneys.

In 2000, China stipulated that the daily allowable intake was 3 0 mg, and the MRL standard for fluoride in tea was 200 mg per kilogram in the industry standard formulated by the Ministry of Agriculture. Therefore, attention should be paid to the fluoride content in tea.

Tea scale is harmful to human health, if we usually drink tea for a long time and do not clean the tea scale, it will affect the body's digestion and absorption of nutrients, after all, tea scale contains a large number of metal substances. Once these metals enter the human body, they will produce precipitates with proteins and fats in the body, which are not conducive to excretion from the body, and will also affect the stomach and intestines.

01 At present, once the metal substances in tea scale enter the human body, it will affect the neurourinary hematopoietic system, and even cause lesions to the body, and there will be functional disorders.

02 Once we find tea dirt in our daily life, we need to clean up the tea dirt. Suitable methods can be used. For example, the potato peel is used directly to remove tea scale, the specific method is to put the potato skin into the teapot, add appropriate water to boil, and pour the water into a cup with tea scale to soak for 10 minutes.

03 Of course, we can also use a soft-bristled toothbrush to wipe constantly, if the tea stains are more serious and stubborn, we can use a toothpaste soft-bristled toothbrush to wipe constantly, and it will eventually be wiped clean.

04 Because tea scale is harmful to the human body, it contains a large number of metal substances, such as iron, hydrogen, chromium, etc., once these elements enter the human body, it will have a serious impact on human health.

The composition of tea scale is a polymer produced by tea polyphenols under the action of air oxidation, and a small number of metal ions are also involved in the formation of tea scale.

The composition of tea scale formed by different types of tea is basically similar, tea scale is a polymer produced by tea polyphenols under the action of air oxidation, so it is mainly formed near the waterline and adheres to the inner wall of the container.

Studies have shown that the molecular weight of the polymer in tea scale gradually increases over time, which means that the polymerization of polyphenols is still proceeding slowly. Therefore, it makes sense that the longer the tea scale, the less likely it is to remove. The surface of the overnight tea soup often has a "film of oil" with a metallic luster, which makes people mistakenly think that there is some kind of heavy metal in it.

In fact, elemental analysis shows that most of the components of tea scale are carbon and oxygen, from polyphenol polymers, and a small amount of potassium, calcium, magnesium, aluminum, zinc, selenium and other elements.

Metal elements are mainly in the form of carbonates or hydroxides that are insoluble in water, of which calcium is the main promoter of the formation of tea scales, mainly from the water in which tea is made. Heavy metal contaminants such as lead, arsenic, cadmium, and mercury are not the main metal elements of tea scale, so there is no need to worry about it when drinking tea.

Those who have been to junior high school know that water, tea, and tea sets will not produce heavy metals after heating, according to this statement, what do scientists want particle accelerators to do, and directly boiling pot tea can violate the conservation of chemical reactions, if there are heavy metals, it should be water quality, or when the tea is processed, it exists, but I personally feel that tea dirt is still unhygienic.

Tea scale is produced by the oxidation reaction of tea polyphenols in tea and metal substances in tea rust in the air, in which cadmium, lead, iron, arsenic, mercury and other metals and nitrite and other harmful substances will adhere to the smooth surface of the teacup. Resources.

The tea dirt retained on the inner wall of the tea set is referred to as tea stains or tea stains. Tea scale is difficult to remove, and a layer of tea scale grows on the inner wall of the tea set, containing cadmium, lead, iron, arsenic, mercury and other metal substances. Tea stains are brought into the body when drinking tea, and they are combined with nutrients such as proteins, fats and vitamins in food to form insoluble precipitates and hinder the absorption of nutrients.

At the same time, these oxides can also cause neurological, digestive, uropoietic and hematopoietic system lesions and dysfunction, especially arsenic and cadmium can cause cancer, cause fetal malformations, and endanger health. Therefore, those who have the habit of drinking tea should often clean the tea dirt on the inner wall of the tea set in time.

Summary. Dear, thank you for your patience, the result that has been found for you is that tea scale is harmful to the body, and tea scale is formed because of the long-term deposition of tea in the tea vessel. Tea scale contains a lot of heavy metal substances, and may even contain carcinogens such as nitrite, I hope it can help you!

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Tea can form harmful tea dirt on the inner wall of the teacup, so will the long-term deposition of tea dirt in the blood vessels of the human body harm human health?

Dear, thank you for your patience, the result that has been found for you is that tea scale is harmful to the body, and tea scale is formed because of the long-term deposition of tea in the tea vessel. Tea scale contains a lot of heavy metal substances, and may even contain carcinogens such as nitrite, I hope it can help you! If you are satisfied with my service, you can give me a thumbs up with your precious fortune hand.

Tea dirt is attached to the inner wall of the cup, and tea rust contains cadmium, lead, mercury, arsenic and other harmful metals, which is the main culprit that endangers human health.

Tea scale refers to the substance formed by the precipitation of tea leaves in boiling water, which is usually composed of a variety of minerals, organic matter, etc. Tea stains themselves do not directly cause harm to the human body, but excessive consumption of tea containing tea stains may have a certain impact on the human body

Reduce the absorption rate of iron: A variety of minerals in tea smearing will interfere with the body's absorption of iron to a certain extent, and long-term excessive drinking may lead to iron deficiency in the body.

Affect the taste: Tea lime is easy to accumulate after a long period of use, which will affect the taste and color of the tea, and it is not easy to drink.

May bring some unnecessary chemicals: There are some chemicals and minerals in tea and water, which may form when boiled together, and tea lime also contains these substances. Excessive consumption of tea containing tea smearage may increase the burden of harmful substances in food on the human body.

Therefore, although tea smearization itself does not cause excessive effects, excessive consumption of tea containing tea smearization still needs to be controlled. It is recommended to drink in moderation, not in excess every day, to avoid accumulation; In addition, it is recommended to wash the kettle and teacup appropriately to remove tea stains to ensure the taste and quality of the tea.

If you drink tea for a long time and do not clean the tea set in time, if you occasionally ingest tea dirt with a small amount of liquid, it is usually not harmful. However, if you ingest tea stains for a long time and in large quantities, there may be hazards in the major meridians, digestion, urinary, and hematopoietic systems.

Tea scale can cause human lesions: the harmful substances in the scale enter the body and may cause neurological, digestive, uro-hematopoietic system lesions and dysfunction.

Tea scale can cause carcinogenesis and fetal malformations: arsenic, cadmium, nitrite, etc. in tea scale can cause cancer, cause fetal malformations, and endanger health.

Tea scale may lead to premature aging: tea scale contains carcinogens such as nitrite, which are easily combined with proteins, fatty acids and vitamins in food into a variety of harmful substances after drinking into the digestive system, and can also damage nerves, gastrointestinal and other organs, and even cause premature aging of the human body.

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The main component of tea scale is tea polyphenols, and a small amount of metal ions are involved in the formation of tea scale. The oxidized polyphenols are the unsightly color of tea scale.