So, how do you sift through the information and figure out which of these studies is right? Most likely, they all are, at least in some specific way. If they appear to have different results, the probable reason is that they are different kinds of studies that were designed to answer different questions. The mere fact that each is "scientific" tells us very little about what they mean for us as individuals.
The goal of this two-part series is to make you an informed consumer of health information.