Benefits of green tea
In the previous article, I had discussed the health benefits of green tea with mint.
In this article, I am going to discuss health benefits of green tea.
but first of all, you should be aware of the history of green tea.
History of green tea
It is believed that the second Chines Emperor Shennong was the first to discover tea when the leaves of Camellia scenes flew to his boiling glass of water in 2737 BC, considered the oldest herb tea on earth. It was introduced to Europe in 1560 and to America in 1650, The first tea was sold as a healthy drink in London in 1657, where it has been of health importance since ancient times.
Green tea nutrients
Green tea is characterized by the complexity of its chemical composition, which consists of the following:
[wp_ad_camp_2] Protein: 15-20% of its dry weight, including the enzymes in it and some amino acids (1-4% dry weight).
Carbohydrates: Makeup 5-7% of its dry weight, include cellulose, glucose, fructose and sucrose ( Lipids (fat): such as linoleic and linolenic acid, and sterols such as stigmasterol.
Vitamins B, C.
Caffeine and theophylline.
Chlorophyll and carotene dye.
Some volatile compounds.
Minerals: Makeup 5% of the dry weight of green tea, including calcium, magnesium, chromium, manganese, iron, phosphorus, zinc, molybdic, sodium, selenium, copper, strontium, nickel, potassium, fluorine and aluminum.
Polyphenols: The most important constituents of green tea are flavonoids, which account for 30% of dry weight.
Catechins are the most important flavonoids found in green tea and vary in quantity by several factors, including the method of production and the geographical area of cultivation.
Epigallocatechin-3-gallate is the most abundant catechin in green tea. It also cont gallic acid and other phenolic acids such as chlorogenic acid and caffeic acid.
Benefits of green tea
- Improve bone density and reduce the risk of fractures, especially pelvic fractures.
- Useful in insect stings because of its resistance to inflammation and its role in stopping the bleeding.
- Strengthening the immune system because of its role in protection against oxidizing substances and free radicals.
- Some studies suggest adding green tea to medications to prevent kidney rejection after renal transplantation.
- Some recent studies suggest a role of green tea in the prevention of Parkinson’s, Alzheimer’s and other neurological diseases.
- Some studies suggest an inverse relationship between green tea intake and kidney stones.
- Some suggest beneficial effects of green tea in cases of alcohol poisoning.
- Green tea increases the amount of water taken daily, as well as a good source of many important vitamins and minerals for human health.
Use of Green tea
Green tea is also used in the food, cosmetic and pharmaceutical preparations due to its high antioxidant content, which makes it a natural and effective preservative.
Side effects of green tea
High-dose green tea causes some damage, but it often results from high doses given to experimental animals or because of very large amounts of green tea, and not from the normal doses normally taken by humans in their diet. These effects include:
- Toxicity of liver cells due to green tea catechins
- Oxidative damage in DNA
- drinking more than 5 cups of green tea can lead to many side effects, such as headaches, stress, sleep problems, vomiting, nausea, diarrhea, irregular heartbeat, stomach burning, dizziness, tinnitus, And confusion.
Green tea should also be avoided if:
Severe heart disease.
In pregnancy and lactation, when not to drink more than a cup to two a day.
Green tea contributes to urinary incontinence and may, therefore, affect some medications. Consult your doctor before taking large amounts of medication
Green tea contains aluminum that can affect patients with kidney failure.