The physics measurements are interesting for different reasons. Those are measuring very objective things, even if measurements vary, they vary for ways we can conceivably calculate. Some physicists even raise the idea that certain constants aren't that constant.

But it's still vastly different to appreciate statistical data coming from those kinds of experiments and those that touch on psychology and social effects. Your height/nutrition example is convenient because we all can appreciate an effect expressed in objective units such as cm that we can see with our eyes. It's much harder to weight the effect that, say emotional states, have in pure numbers.

I could continue this discussion endlessly, probably not going to get anywhere with it.