The primary components of tea
Theine: this is the same alkaloid as caffeine but contrary to coffee, the « caffeine » in the tea does not give an immediate effect, but acts over time to arouse the spirit. Tea stimulates and does not excite. It also eliminates tiredness and increases concentration. The theine content in a tea depends on the amount of shoots in the tea (initial leaves) and the time of harvest. Teas harvested in the spring generally contain more theine.
Tannins: the famous anti-oxidants (fight free radicals which are partially responsible for cellular ageing) are contained in the tannins.
Tea also contains certain nutriments:
> amino acids, one of which is the theanine
> aromatic compounds
> vitamins (A, B, E, P, K)
> minerals: potassium, iron, magnesium, calcium, phosphorous, fluorine and hardly any calories (1 to 2 per cup)
Iron: Tea can slow down iron absorption by the organism. If you are lacking iron, tea consumption should be limited to in-between meals.