[trprog]

>This science branch seems to attract charlatans.

It seems like it is incredibly difficult to perform conclusive research around nutrition, human growth etc without violating a bunch of ethical standards. The relative inability to perform research that comes to solid conclusions combined with the fact that food is something that people make purchasing decisions around every day (ie there are lots of $'s involved) creates huge scope for dubious ideas and ethically dubious businesses to thrive.