Is drinking overnight tea bad for your health? What are the disadvantages of drinking tea overnight?

I like to brew a pot of tea and drink it slowly, but I often can't finish it, so I can only leave it overnight and drink it again the next day. Many people say that overnight tea can breed bacteria and produce nitrite so it can't be consumed, is this true?

As long as it is stored properly, overnight tea is okay to use. Many people worry about nitrite production, but they don't have to. CCTV reporters have done experiments to send a cup of tea brewed for 12 hours, a cup brewed for 24 hours, and a cup of freshly brewed tea to the Beijing Institute of Nutrition Source for testing.

The results showed that the nitrite content of the tea with 12 hours and 24 hours and the freshly brewed tea did not change significantly, and the highest content was only about 1 4 of the national drinking water standard.

As for the breeding of bacteria, the sugar and amino acid content in tea is very low, and it is not a good "culture medium" for bacteria, and if the lid is closed, it is difficult for bacteria in the air to fall into the teacup, so there is no need to worry too much.

So how long can tea generally sit without spoiling? How to store tea well?

The question of how long it will spoil is not conclusive, which is closely related to factors such as the preservation environment, the condition of the tea, and the variety of tea, but if there is a peculiar smell or obvious changes in color and texture, it is better not to drink it.

It is recommended to close the container with a lid or plastic wrap for unfinished tea, and then put it in the refrigerator for storage, 8 12 hours will generally not deteriorate, after all, one of the fashionable cold brew tea preparation methods is to add cold water and tea leaves to the container, and then put it in the refrigerator to soak and extract for 8 hours.

Can drinking tea overnight cause cancer.

Not good. Substances that are harmful to the body can be produced in overnight tea. Don't drink tea overnight.

If the tea is left overnight for a long time, the protein in the tea will breed bacteria, and drinking it may cause gastrointestinal discomfort and diarrhea. However, there are rumors that the nitrite content in overnight tea will increase and affect human health, and scientific studies have shown that the nitrite content in overnight tea will not increase.

If the tea soup is left overnight for too long, vitamin C and other nutrients will gradually oxidize and decrease or disappear, and the proteins and sugars in the tea will become nutrients for the reproduction of bacteria and molds. If a person drinks this type of tea, he will have nausea and vomiting, stomach pain, indigestion, etc.

First of all, it will produce carcinogenic substances, because these teas will produce some nitrosamine substances, and after the content is exceeded, it will affect people's digestion, and it will also cause people to feel pain in the abdomen.

Overnight tea may produce bacteria, may deteriorate, affect health, tea contains tea polyphenols, vitamins and other nutrients, after a long time, oxidation will occur, will lead to the loss of nutrients, will make people age.

Overnight tea will affect the health of the body, overnight tea because of too long, most of the vitamins have been lost, and the soup protein, sugar, etc. have become nutrients for bacteria and mold reproduction, so it is not suitable for drinking. However, overnight tea that has not deteriorated has its own wonderful use in medical treatment. Overnight tea is rich in acids, which can prevent capillary bleeding, such as stomatitis, tongue pain, eczema, bleeding gums, sores and abscesses, etc., can be used overnight tea**.

Drinking overnight tea is very bad for the body, because some organic matter in the overnight tea will be fermented for a long time, which will produce mold. It is extremely harmful to the body. In addition, due to the long time of overnight tea, the vitamins in the tea have been lost, and drinking it is not beneficial, and it will cause serious gastrointestinal discomfort.

This is the reason why overnight tea is not recommended.

Tea itself contains a variety of tea polyphenols, which have anti-radiation and detoxification effects. However, if the tea leaves are left for too long, tea polyphenols and the air can produce camellia rust. Tea rust contains a large amount of lead, mercury and other harmful substances.

After these substances enter the human body, they will combine with the body's fats and vitamins to form a precipitate, which is not conducive to the absorption of the human body.

Overnight tea is indeed not suitable for drinking, long-term drinking will lead to yellowing, may lead to the harm of stones, so it is not recommended to drink overnight tea. Most of the vitamins have been lost due to the long time of overnight tea, and the proteins and sugars in the tea soup will become nutrients for the reproduction of bacteria and molds, so overnight tea cannot be drunk. In summer, the hot and high temperature, the tea that has been placed for a long time, proteins, sugars, etc., will become the medium of bacteria and mold, which is easy to breed bacteria and mold, resulting in the spoilage of the tea soup, and the spoiled tea soup is naturally undrinkable.

There are some symptoms of insomnia, and the body's metabolic ability will also be reduced, and the body's performance will be very bad, and there will be no energy, etc., these are not good for the body.

1. Tea contains tea polyphenols, which are easily oxidized into brown gelatinous substances in air and water - tea rust. Tea rust contains a variety of substances such as pickaxe, lead, iron, arsenic, mercury, etc. The longer the tea is exposed to the air or left in the teacup for a long time, the more the amount of tea polyphenols oxidized into tea rust will be.

Tea rust enters the human body, binds and precipitates with proteins, fats and vitamins in food, hindering the absorption and digestion of nutrients.

2. The temperature is high in summer, and the tea is easy to rancidity, if it is left for more than 24 hours, it is best not to drink it, otherwise it will cause diarrhea.

3. Most of the vitamins have been lost due to the long time of overnight tea, and the proteins and sugars in the tea have become nutrients for the reproduction of bacteria and molds, so they should not be drunk.

Drinking tea is a long-standing health water drinking habit of the Chinese nation, which can reduce cholesterol, purify the blood, strengthen the heart, diuretic, and refresh the brain. So, can you drink overnight tea?

What is Overnight Tea? It does not mean that the brewed tea is called overnight tea after one night, it should depend on how much time has elapsed after the tea has been brewed.

We can use 8 hours and 12 hours as nodes. Overnight tea that is more than 24 hours old has a higher chance of mold, bacteria and mildew, so it is not recommended to drink it; Hours to 12 hours, depending on the weather and temperature, 12 hours in summer is also perishable, and about 12 hours in winter is better.

In general, overnight tea within 12 hours is not a big problem. Of course, it is definitely not as fragrant and nutritious as freshly brewed tea, but the nutritional factors will be reduced, and drinking it will not harm your health.

3 reasons to tell you, don't drink overnight tea! 1. Tea contains tea polyphenols, vitamins, catechins, amino acids and other components, antioxidant is one of the important effects of tea, tea exposed to the air for a long time, vitamin C, etc. are oxidized, tea polyphenols are oxidized into tea pigments, and the antioxidant effect will be weakened, especially green tea and white tea.

2. After the tea is left for a long time, tannic acid will be produced, and the tannic acid will be completely dissolved in the tea. After drinking in the morning, and then eating breakfast, tannic acid will interact with food to produce oxalic acid, and tannic acid and oxalic acid combine to cause chemical changes, which is easy to produce stones. At the same time, tannic acid also makes other nutrients more difficult to digest.

3. If the overnight tea is left for more than 24 hours, because the tea itself contains sugar and a small amount of protein, it will become moldy under suitable temperature and humidity conditions, produce bacteria and mold, and cause diarrhea. Therefore, tea that has been more than 24 hours old should not be drunk, especially in the summer when the temperature is high.

In addition, for some strong teas, there have been medical demonstrations that brewing time exceeding a certain limit will cause a certain amount of *** and produce some corresponding harmful substances.

In short, the harm of overnight tea is limited to spoiled overnight tea, and overnight tea without spoilage will not be harmful to health, on the contrary, there are many health benefits Overnight tea is rich in alcohols and fluoride, which can prevent capillary bleeding. If you suffer from oral bleeding, ** bleeding, sores and abscesses, etc., you can use it to treat them. If the disease is in the mouth and nose, you can use overnight tea to wash and rinse.

These people can't drink a sip of tea1, and they should not drink tea when they suffer from neurasthenia or insomnia, stomach ulcers, heart disease, or high blood pressure.

2. Women who drink strong tea during menstruation are prone to dysmenorrhea, prolonged menstruation and excessive menstrual bleeding; Pregnant women drinking strong tea will affect the nutrition and development of the fetus; Drinking strong tea during lactation, caffeine can enter the baby's body through milk, causing the baby's excitement, crying and intestinal spasms, and will also inhibit the secretion of milk, resulting in a decrease in milk secretion.

It is not good for the body, because a lot of bacteria will enter the overnight tea at night and react with the tea, and drinking it in this way will have a certain impact on our body.

Not good. Because overnight tea can breed bacteria. Drinking it can cause discomfort in the body. So don't drink overnight tea.

I think drinking overnight tea is not good for our health, because tea soaked in water can secrete some elements that are harmful to our body, and after overnight brewing, some more toxic tea polyphenols will be produced, which can affect our health.