Considered a true "health products", tea is one of mankind's oldest beverages, used first in the East material ceremonial and medicinal drink, and then arrived in Europe only in the seventeenth century . Already a herbarium in 1578, he reported the alleged beneficial properties to aid digestion, dissolve fat, neutralize poisons in the digestive system, and more.
Today it is shown that the main advantages lie in the consumption of tea in the anti-oxidant effects , anti-carcinogenic and anti-ateriosclerotico, most likely due to the presence of flavonoids.
The antioxidant activity of tea in the last 10 years has been the subject of numerous studies which showed that catechins present in the beverage have an important role in the prevention of various disorders and diseases such as cancer, heart disease, multiple sclerosis and autoimmune diseases. The properties of
polyphenols, particularly green tea, show that there is the ability to block tumor growth by inhibiting production of pro-inflammatory metabolites and thereby decrease the inflammatory response.
The results of a recent meta-analysis also indicates that green tea may help prevent breast cancer in its early stages , although data are still preliminary and the cases studied is insufficient for answers certain.
Several studies show that heavy tea drinkers, especially populations belonging to Eastern are more protected from oxidation caused by degenerative diseases and cellular aging.
It should be noted, however, that substances contained in tea have a very low toxicity , so it's conceivable their isolation for direct use as phytocomplexes, even in the form of food supplements , already on the market for some years.
As it emerged from some research also carries tea cholesterol-lowering action that can help prevent cardiovascular disease.
not forget, finally, that this is absolutely a drink without calories therefore suitable for those who follow a diet dietary (by due attention to the iced tea in cans or in the bottle, often sweetened).
Under the nutritional point of view it should be borne in mind that, unlike what is normally considered, the tea contains only low percentages theobromine and theophylline, but high doses of caffeine : in ancient times was in fact consumed for its own stimulants.
Both black tea and green, when compared with caffeine, cause a greater increase in blood pressure after 30 minutes after ingestion. However a regular intake do not cause any alteration in blood pressure.
For further information visit the website of Dr. Rosalba Galletti
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