Well, so far I found only a couple cross references to inducing insulin resistance.

CLA
Glucosamine
DHEA

Don't know if anything will come of them but something to investigate.

I read somebody saying that Charles Poliquin uses fenugreek for managing "body composition" (funny how people have to use such fancy terms). They referred to his website but I couldn't find anything about it on there. That doesn't mean it isn't there, though :o .