What's the lowest I can drop the dietary fat macro to without sabotaging hormones?

Trump2016

I know dietary fat isn't spo0o0oky or anything and I don't even need to lose weight, but I'm asking because I just prefer carb sources for personal satisfaction:

In saying that, I would rather heighten carbs as much as possible and lessen fats as much as possible.

But how low can I go without it being detrimental to my hormone levels/testosterone/etc.? Anyone have any medical journals I can look toward?

Input is mighty appreciated.