I'm also very sceptical, and have tried loads of stuff, none of which did much, apart from ACAI and ephydrine hydrochloride, but that had many many bad side effects.
I have nothing to gain by writing about stuff that doesn't or hasn't worked for me, which is why until I found something that did work for me excellently did I write.
I would assume that if it did not work for someone, then they must have been pretty good health wise to start with, my diet was crap, is now excellnet, I just don't want crap anymore, and this is not anything consciously that I have tried to do, it's just happened.
Not for one minute saying it's for everyone, was for me, but gf found no benefit from it, it also makes you poo twice the amount each time you go, I have noticed.
The first lot I got contained caffiene, so got a better lot afterwards, another one dubbed "super food" is MACQUI, the heading super food has been used by the medical profession, who are more sceptical than most, but every blind trial has had massive success, there has to date been not one single case of any negative efect, it is only a NATURAL FRUIT after all, animals eat it also.
tabetha