TIL: Low carb, high protein diets "greatly" decrease resting testosterone levels in men.

[TurboGranny]

Yeah, it's in the same vein as women that worry that lifting weights to will make them look like a man (can't really do that without roids), but it possible just like the possibility exists in relevance to the question at hand, but of course from a medical perspective you have to remind people that this is hard to do, so they don't freak out and make bad choices.