Tannin in tea is a phenolic compound that has astringent and anti-inflammatory properties.
Have antioxidant action that protects cells against free radicals, and reduce the risk of degenerative diseases,
However, we should not abuse foods rich in tannins, since, in excessive amounts, they can reduce the absorption of nutrients.
Such as iron or proteins, and be the cause of insufficiency.
It is considered an antinutritive substance since its binding with proteins and subsequent coagulation interfere with its digestibility reducing the absorption of certain minerals.