Originally Posted by kaplods
Personally, I think scientists are still asking the wrong questions. Instead of "which diet is best," they need to be looking into "for whom."
I think you're so right. They might find different results if they ask different questions. When I teach research methods, I talk about paying attention to the sample. If the sample is all men (as all clinical drug trials used to be) how can we know they apply to women?
If the researchers didn't focus on X, Y or Z in their sample, then the results might not apply to X, Y or Z.
It's one of the many reasons why it's difficult to do good research on diets (and exercise)... Most research studies don't generalize beyond the parameters in which they were conducted.