http://www3.interscience.wiley.com/journal/120126017/abstract?CRETRY=1&SRETRY=0
http://www.************.com/boards/showthread.php?t=469187
i found this,,,,so it does look like its the amount of tea...
The polyphenols present in green tea plants or herbs could pose health risks to humans if extracted and packaged in highly concentrated doses, says a new University of Toronto study published in the current issue of Free Radical Biology and Medicine.
http://www.medicalnewstoday.com/articles/38399.php
I am not sure...i will do some more research...buty i do know one thing...those green tea extract are not good...some of these ,even one pill.can egual 10 to 15 cups of tea...again,moderation the key....ive been reading green tea is great for the liver...i still drink green too...i even drink coffee
when it says green leaf , does it mean green tea is toxic? i drink a lot of green tea.
http://www.liverdisease.com/
http://www.liverdisease.com/harmfulherbs_hepatitis.html