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Health Benefits of Black Tea
Black tea can provide many health benefits when consumed properly. Some of the benefits of black tea include:
Boost heart health : black tea contains flavonoids, which help reduce the risk of heart disease by lowering bad cholesterol (LDL) levels and increasing good cholesterol (HDL).
Aids digestion : black tea can help boost the digestive system and reduce uncomfortable symptoms like bloating or constipation.
Improve mood : black tea contains caffeine, which helps increase alertness, improve concentration and reduce fatigue.
Antioxidants : Black tea contains polyphenols, which help protect the body from free radical damage, which may reduce the risk of certain chronic diseases.
Aids in weight loss : Some studies show that black tea can aid in weight loss due to its ability to boost fat metabolism.
However, it is important to note that black tea contains caffeine, which if consumed in excess can cause anxiety, insomnia or upset stomach. If you drink black tea in moderation, regularly, and in conjunction with a healthy diet and active lifestyle, it can be part of a healthy diet.
Side effects of black tea
Although black tea has many benefits, if consumed in excess or improperly, it can also cause some harmful effects on health. Here are some of the possible harmful effects:
Causes insomnia : Black tea contains caffeine, a stimulant that can cause insomnia, especially if you drink it in the evening or before bed. Consuming too much caffeine can increase anxiety and make it difficult to sleep.
High blood pressure : Some studies indicate that drinking too much black tea may increase blood pressure, especially for people with a history of high blood pressure or sensitivity to caffeine.
Stomach irritation : Caffeine and other compounds in black tea can irritate the stomach, causing indigestion, heartburn or stomach pain, especially when consumed on an empty stomach.
Affects iron absorption : Black tea contains tannins, a compound that can reduce the absorption of iron from food. If you drink black tea with an iron-rich meal or if you are iron deficient, drinking too much black tea can worsen your iron deficiency.
Increased risk of bone disease : Some studies have shown that drinking too much black tea can reduce bone density if the body does not absorb enough calcium. This can affect bone health, especially for older adults.
Habitual and Addictive : Since black tea contains caffeine, drinking tea regularly can lead to caffeine dependence, making you feel tired and lacking in energy if you don't drink tea.
To reap the benefits of black tea without experiencing the above side effects, you should drink tea in moderation (1-3 cups per day) and avoid drinking tea too close to meals or in the evening. If you have any health problems such as high blood pressure or osteoporosis, you should consult your doctor before drinking black tea.
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Who should not drink black tea?
Although black tea has many health benefits, not everyone is suitable to drink this type of tea. Here are some people who should not drink black tea or need to be careful when using it:
People with blood pressure problems : Black tea contains caffeine, which can temporarily increase blood pressure. People with high blood pressure or a history of high blood pressure should limit their intake of black tea.
People with stomach ulcers or digestive problems : Caffeine and other compounds in black tea can irritate the stomach and increase stomach acid, leading to stomach ulcers, heartburn, or indigestion. People with stomach problems, such as ulcers, should avoid drinking black tea or drink it only after a full meal.
Pregnant or breastfeeding women : Caffeine can affect a fetus or newborn baby, especially if consumed in large doses. Pregnant and breastfeeding women should limit their caffeine intake, including black tea, and consult their doctor about safe levels.
People with heart problems : The caffeine in black tea can stimulate the heart, increase heart rate and cause problems for people with heart disease, such as arrhythmia.
People with anxiety and insomnia : Black tea can cause anxiety and difficulty sleeping due to the stimulating effects of caffeine. People who are prone to anxiety or insomnia should avoid drinking black tea, especially in the evening or before going to bed.
Iron Deficiency : Black tea contains tannins, which can reduce the absorption of iron from food. If you have iron deficiency or anemia, avoid drinking black tea right before or after an iron-rich meal.
Children : Caffeine is not recommended for children as they may be more sensitive to the effects of caffeine. Children may experience side effects such as insomnia, anxiety, and digestive upset when drinking black tea.
Source: https://kinhtedothi.vn/dieu-can-biet-khi-su-dung-tra-den.html
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