## Why drink tea? Besides the taste, there are several reasons. Tea is invigorating due to the high content of caffeine, and its composition includes [A](https://ul.orna.me/KOge/librarybiomarker?id=85), [K](https://ul.orna.me/KOge/librarybiomarker?id=493), and [B](https://ul.orna.me/KOge/librarybiomarker?id=33) vitamins, ascorbic acid, nicotinic acid, tannins, flavonoids, and antioxidants called catechins. Thanks to such a rich composition, this tea restores strength, helps normalize blood pressure, affects the ratio of "bad" and "good" cholesterol, helps maintain youthfulness, and even helps with weight loss. Additionally, green tea has ===a positive effect on the digestive, cardiovascular and immune systems, improving the functional state of the body. One of the most important properties of green tea is its antioxidant effect. It increases the ability of body cells to resist oxidative [stress](https://ul.orna.me/KOge/librarydisease?id=19), i.e., it prevents aging processes. > Don't drink tea that is too hot: it irritates your throat, esophagus, and stomach mucosa, as well as worsens the quality of your tooth enamel. ## How much should you drink? Despite all of these positives, you shouldn’t drink endless amounts of tea due to its caffeine content. The average person should drink no more than 3–4 cups of tea per day. People who have any of the following issues should be especially careful about tea consumption: - Predisposition to high blood pressure - Peptic ulcers or exacerbated gastritis - Glaucoma (because caffeine dilates the eye vessels, which increases intraocular pressure) - Insomnia - [Allergies](https://ul.orna.me/KOge/librarydisease?id=21) (this point applies mainly to herbal teas and teas with various additives