Green tea contains a lot of catechins, which is another antioxidant. Researchers believe that EGCG, a catechin, may help prevent heart disease and cancer. According to the American Cancer Society, EGCG can make some cancer cells die like normal cells, while cancer cells not exposed to EGCG continue to grow and metastasize. A study shows that drinking one cup a day can reduce the heart disease risk of 10%. Green tea contains caffeine, which is a stimulant to promote metabolism.
Chamomile is made from the flowers of chamomile, which has been used in diet for centuries. Its most famous function is sleeping. Many people drink chamomile to help them sleep. Scientists have found that chamomile also contains antioxidant components, which can inhibit the growth of cancer cells. These antioxidants can help diabetic patients prevent complications, such as kidney injury, nerve injury and vision loss. In 2008, a study with mice found that chamomile can inhibit the rise of blood sugar, thus preventing diabetic complications. Chamomile can also reduce inflammation, so it can reduce the risk of arthritis, gastrointestinal pain, hemorrhoids and even depression.
White tea is made from tea leaves. People harvest before the leaves are fully open. At this stage, the buds are covered with white fluff, so this kind of tea is called white tea. After picking by hand, the leaves will dry quickly before oxidation. White tea, like green tea, contains a lot of catechins, which helps to fight cardiovascular diseases and cancer.
Kombucha is fermented black tea or green tea. Probiotics produced during fermentation have many health benefits, including improving digestion, reducing inflammation and even helping to lose weight. The researchers found that there is a link between inflammation and depression, and black tea fungus has anti-inflammatory effect, which means it can relieve some depressive symptoms. Kombucha also contains a lot of antioxidant components, so it can provide many of the same health benefits as green tea, such as reducing the risk of cancer and cardiovascular disease. Acetic acid will be produced in the fermentation process of making black tea fungus, and acetic acid is also one of the components of vinegar. Acetic acid can kill bacteria, thus preventing infection.
Oolong tea is another fermented tea. Different from the black tea fungus, its fermentation process stopped earlier and stopped when the leaves began to change color. Oolong tea contains many vitamins and minerals, including calcium, copper, manganese, potassium, selenium and vitamins A, B, C, E and K. Oolong tea also contains caffeine, theobromine and theophylline as stimulants.
Oolong tea is also a good source of nicotinic acid and antioxidants, or it can prevent tooth decay. It can activate enzymes that help burn fat. In addition, it is rich in antioxidant components, which helps to prevent osteoporosis and make bones stronger. Oolong tea can also help control diabetes and relieve skin diseases such as eczema and atopic dermatitis.
South African red leaf tea is made from the leaves of red leaf tea tree, a shrub produced in Africa. This kind of tea is famous for its red color, delicious taste and many health benefits. Unlike many teas, South African red leaf tea contains no oxalic acid, so it is safe for kidney calculi patients. South African red leaf tea also contains no caffeine, so it may be helpful for insomnia. Drinking a cup of South African red leaf tea before going to bed will help you fall asleep.
South African red leaf tea contains many minerals, such as zinc, magnesium, manganese, copper and calcium. Some of these minerals can strengthen bones and teeth, thus preventing osteoporosis and arthritis. South African red leaf tea also contains a lot of anti-inflammatory and antioxidant components, which helps to prevent heart disease and cancer. Non-Hodgkin and aspartic acid, two antioxidant components in South African red leaf tea, also help to strengthen the immune system.
Echinacea purpurea is a herbal tea made from flowers and leaves of the same name plant. Echinacea belongs to Echinacea of Compositae, and there are nine varieties. Among them, Viola yedoensis, Viola pallidum and Viola microphylla are used as dietotherapy for different diseases. Native Americans have used echinacea for more than 500 years.
Echinacea purpurea contains many antioxidants, vitamins and minerals. Because it contains a lot of vitamin C, it is often used to treat colds. A study shows that taking echinacea tablets or echinacea tea can prevent infection. Vitamin C also helps to make collagen, so it can help prevent skin problems such as wrinkles and age spots.
Mint is a kind of herbal tea made of mint leaves, which is used to treat colds and headaches. Many headaches are caused by vasoconstriction; Peppermint helps blood vessels dilate. Mint can decompose mucus that causes nasal congestion, reduce inflammation, and thus relieve colds.
Mint also helps many digestive problems, including irritable bowel syndrome, which has few treatments. Mint can promote digestion and relieve stomachache. Mint can also relieve menstrual pain. Drinking mint tea two or three times a day before and during menstruation may relieve menstrual pain. In addition, mint can improve alertness and memory. It also helps to relieve stress and has analgesic effect.
Rose Hip is a kind of herbal tea, which is made of dried or crushed rose hip (the fruit of rose plant). It is a good source of vitamin C and many antioxidants, such as catechins and polyphenols. Flavonoids and carotenoids in rose hips have analgesic effects, which may help to relieve pain. Vitamin C in rose hips can help increase the number of white blood cells, thus enhancing the immune system.