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"A cup of tea a day helps prevent cardiovascular disease"
Is this statement true?
Is a cup of tea a day good for the body?
The Dietary Guidelines for Chinese Residents (2022 Edition) systematically combed through the literature data at home and abroad, and through the comparative analysis of these literatures, relevant scientific evidence was found, and it was found that regular tea consumption can reduce the risk of cardiovascular diseases.
The results of another meta-analysis showed that drinking a cup of tea a day, that is, drinking about 200ml of tea per day, can reduce the risk of cardiovascular and cerebrovascular diseases by 4%.
In addition to this, drinking tea every day can not only reduce the risk of developing type 2 diabetes, but also reduce the risk of stomach cancer.
What are the prominent nutrients in tea?
✿ Tea polyphenols: It has strong antioxidant activity, has a certain anti-cancer effect, and can also reduce the content of low-density lipoprotein, which plays a very important role in reducing the risk of cardiovascular disease.
✿ Theanine: It is a neuroprotective agent that helps to improve the cognitive function of the human body and has a certain positive effect on inhibiting Alzheimer's disease. It can also soothe the mood and improve sleep quality.
✿ Caffeine: It stimulates the nervous system, reduces the risk of neurodegenerative diseases, and also has diuretic, increases muscular endurance, and anti-fatigue.
These 5 types of tea are not recommended to drink
Tea
Tea contains tannic acid, and drinking a lot of strong tea can affect iron absorption. Therefore, people with iron deficiency anemia should take care to drink less strong tea.
Moldy tea
Tea mold is due to the contamination of microorganisms such as penicillium and aspergillus, and drinking moldy tea may cause food poisoning symptoms such as diarrhea, and may cause lesions of important organs such as liver and kidney.
Damp and moldy tea smells damp and moldy, especially when brewing, this smell is more obvious, once found, please do not drink.
Skewer-flavored tea
Tea contains terpenoids, has a porous structure, and is very easy to absorb peculiar smells, and it is easy to change the flavor after being put together with other flavored things for a period of time.
Some smells contain toxins, such as the smell of paint, which can cause harm to the human body.
When storing tea, try to isolate food with peculiar smell to prevent odor transfer.
It should be noted that different grades and varieties of tea should also be stored separately.
Kuawacha
If the brewing time is too long, not only the tea soup will be dark in color, poor in taste, and lose its tasting value, but also the vitamins in the tea will be reduced due to oxidation, which will greatly reduce the nutritional value of the tea soup.
In addition, the tea soup is left for too long, and it is easy to be polluted by the surrounding environment, which increases the number of microorganisms in the tea soup, which is very unhygienic.
Overscald tea
The water temperature of making tea is generally 80 °C ~ 90 °C, sometimes it is still 100 °C boiling water, so it cannot be drunk when it is too hot, otherwise it will burn the mucosa of the mouth and esophagus, cause ulcers, and may induce oral cancer and esophageal cancer over time.
Source: Wellness China
Editor: Li Bingqian
Editor-in-charge: Wang Bo
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