look at the post above this i already answered!!!
But anyway, to explain more, tea leaves contain a high content of acid. This substance will cause the Protein content in the food we consume to be hardened thus difficult to digest. Anemic is a effect of shortage of iron in our body. It’s now common in 50% f the people. High percentage of iron helps our body to overcome such Anemic. Also, there is a substance called Tannin in tea and coffe but it's highly concentrated in tea 50 % more than coffee. This Tannin makes it hard for the intestine to absorb he iron, hence, having tea after meals directly will effect severely. So, it's better to have tea 1 hour after every meal.