Although it's not mentioning weight loss, this should show that though there's nothing wrong with green tea per se, its health claims were apparently a trifle, shall we say, overblown
as if this was any surprise to the millions who have taken various diet nostrums that contain some form of green tea extract or whatever in them with no real or long-term effects.
FDA Rejects Health Claim for Green Tea
Hopefully the FDA will follow up on the effects of green tea (or lack thereof) on weight loss - although currently marketers are still running rampant with their downright lies while selling their various tonics...