I absolutely agree with you RTH. Many studies are done very poorly. It is important to rule out other variables, for which there are many before coming to a conclusion. That is why I specifically wrote that it is important to see just where these things come from and why I specifically pointed out that I was not pointing to this particular study but in general...one needs to see how the study was done. But I also think it is equally important to not brush off every study that comes along, automatically, without knowing how they did it. Not every scientist or researcher is conducting as faulty information as you might think.