* Testosterone increases lean mass and decreases fat mass. I think you have the relationship backwards * Your body creates cholesterol, dietary cholesterol has

* Testosterone increases lean mass and decreases fat mass. I think you have the relationship backwards * Your body creates cholesterol, dietary cholesterol hasn't been shown to increase hormone production AFAIK, might want to link some studies if you can find them * Calories increase body fat, no particular macronutrient has been shown to be disproportionatelly fattening. The insulin hypothesis is mostly incorrect. * Different workouts produce different hormone reactions in different individuals. Even so, the effect is transient and unluckily to modify average testosterone levels * Phytoestrogens in normal dietary amounts likely have minimal effects on testosterone My personal hypothesis is that the environmental load of various endocrine disruptors from plastics, pharmaceuticals, hygiene products, clothes, etc, has increased dramatically.