Is Ok to drink green tea every day?

Green tea has had a consumption history in China for more than 2000 years. The Chinese say "it is Ok to go with food for 3 days, but not without tea for a day". 

The premium loose leaf green tea can be infused repeated for up to 5 times. One or two lots of the tea leaves is sufficient to supply one with enough fluid for a day. It is therefore almost impossible to consume 'too much' green tea. 

The caution however should be taken by the following two groups of consumers:

1. Pregnant women. Based on the principle of 'drug free pregnancy', we recommend the pregnant women not to drink green tea or drink moderate amount due to the caffeine content. 
2. People with iron deficiency anemia. Green tea polyphenols are considered to be inhibiting factors for iron absorption. Studies however have demonstrated that "as long as the absorption enhancing factors such as ascorbic acid and meat are at present, they overcome inhibition of iron absorption from even large amounts of tea". It is however recommended to "consume tea between meals instead of during the meal; simultaneously consume ascorbic acid and/or meat, fish and poultry."