Tea, as a treasure of Chinese culture, not only has a long history and profound cultural heritage, but also is highly regarded for its unique health care function. Drinking a cup of tea has become a habit in many people's daily lives, and tea is also believed to have a variety of health benefits such as preventing cardiovascular disease.
However, doctors remind us that although most teas are beneficial to the body, there are still five types of tea that need to be consumed with caution to avoid health risks.
First, let's take a look at why tea is thought to have cardiovascular benefits. Tea is rich in antioxidants such as tea polyphenols and catechins, which help to remove free radicals in the body and reduce oxidative stress, thereby protecting the cardiovascular system from damage.
In addition, ingredients such as caffeine and theophylline in tea are able to stimulate the central nervous system, increase heart rate and metabolic rate, help burn fat, and reduce the risk of cardiovascular disease.
However, not all teas offer these benefits. Here are five teas that doctors recommend that we drink with special care:
1.Strong tea: Strong tea is high in caffeine and theophylline, and excessive consumption may cause rapid heartbeat, increased blood pressure, and cause a burden on the cardiovascular system. Especially for patients with high blood pressure and heart disease, they should avoid drinking strong tea.
2.Overnight tea: The vitamins, tea polyphenols and other nutrients in overnight tea have been heavily oxidized and have lost their original health care effects. At the same time, overnight tea may also breed bacteria, cause damage to the gastrointestinal tract, and even cause symptoms such as diarrhea.
3.Hot tea: Although hot tea can bring a warm feeling, too high a temperature may damage the esophageal mucosa and increase the risk of esophageal cancer. Doctors recommend that tea should be cooled below 60 before drinking.
4.Moldy tea: If the tea leaves are damp and moldy during storage, a large amount of harmful substances such as aflatoxin will be produced. These substances are highly carcinogenic and can cause serious damage to both the liver and the cardiovascular system. Therefore, once the tea leaves are found to be moldy, they should be discarded immediately and never drunk.
5.Additive tea: In order to pursue taste and color, some merchants may add flavors, pigments and other chemicals to tea. These additives can pose a potential threat to human health, especially to the cardiovascular system. Therefore, when buying tea, we should choose products with reliable quality and no additives.
In addition to the above five types of tea that need to be drunk with caution, doctors also remind us to pay attention to the appropriate amount when drinking tea. Excessive tea consumption may lead to insomnia, heart palpitations, indigestion, and other problems. In addition, for special groups such as pregnant women, lactating women, children, etc., tea drinking should also be cautious and preferably under the guidance of a doctor.
In conclusion, tea, as a traditional health drink, is indeed beneficial to the cardiovascular system when consumed in moderation. However, not all teas are suitable for everyone.
When choosing tea, we should choose according to our physical condition and taste preferences. At the same time, it is also necessary to pay attention to the appropriate amount and caution in the process of drinking tea to avoid unnecessary risks to health. Let us pay attention to our own health while tasting the fragrance of tea, so that tea can become a beautiful landscape in our lives.