Some people think that tea can keep healthy,

It can also fight cancer and lose weight.

But there are also online articles saying that,

The content of heavy metals in tea is very high,

Drinking tea without washing the cup will kill people. ...

These rumors about tea,

Is this all true?

Can drinking tea detoxify?

"Detoxification" itself is a concept of "fooling people", and there will be no "poison" in healthy people's bodies.

The skin, respiratory system and digestive system of human body construct the body's defense line, which blocks many toxic and harmful substances and prevents them from entering the body. The immune system can recognize and eliminate foreign substances that invade the body. The liver and kidney are filtration systems, which filter out the waste entering the blood and the waste produced by human metabolism.

Therefore, the so-called detoxification diet is useless and sometimes even harmful. Drinking tea can't "detoxify".

Can tea prevent cancer?

Tea contains some healthy antioxidants, and many people even think that tea has the function of preventing cancer.

However, a recent study reached the opposite conclusion. A follow-up study of 500,000 people 10 years in China found that people who drink more tea are more likely to develop cancer than those who don't drink tea or drink less tea.

After analyzing various related factors, the researchers found that the reason for this situation is that some people think that tea can fight cancer, so they let go of smoking and drinking, and as a result, cancer still finds you.

Tea contains no sugar and zero calories. It is a good drink, very suitable for daily drinking. But if we don't correct bad habits such as smoking and drinking, we just take it for granted that we can avoid cancer by drinking tea.

Is excessive pesticide residue in tea a "poison"?

There was a hot article on the Internet that many well-known tea products have detected pesticide residues, and such tea is "poisonous".

In fact, the video cited in this article was published on 20 13, which is not the latest content.

It is true that some pesticides may remain in tea. The state has formulated the relevant standards for pesticide residue content in tea. As long as the tea purchased in the market meets the relevant national standards, it is a qualified product and will not cause harm to human health.

In addition, most pesticides are fat-soluble and insoluble in water, which means that pesticides will not be soluble in tea soup.

Drinking tea without washing cups is the death of Yan?

Some people say that you can't wash the teacups when drinking tea, but you should "raise tea mountains". However, some people say that tea stains contain heavy metals, and drinking tea without washing cups is harmful to health.

The content of heavy metals in tea stains that meet the relevant national standards will not be so high as to endanger health.

However, this does not mean that it is a good thing to keep tea stains. The tea set is in a wet state for a long time, coupled with the long-standing tea stains, it is easy to breed microorganisms in the cup, so it is best to clean it in time.

Is it useful to detect pesticide residues in tea with goldfish?

There has been such a video in the circle of friends.

In the video, the video shooter puts out three cups of herbal tea, which are labeled as black tea, scented tea and green tea. Lively goldfish died quickly in green tea and scented tea, but it was safe in black tea.

Some people say that this is because there are pesticide residues on green tea and scented tea, which will lead to the death of small fish.

This detection method is completely unreliable.

Tea contains tea saponin, which can destroy gill epithelial cells and kill fish. However, tea saponin is harmless to people.

The fish in the black tea in the video did not die because the black tea was fermented during the processing, and tea saponin was decomposed in large quantities during the fermentation, which had nothing to do with the content of pesticide residues in the tea.