During fasting, decreased sex hormone production may be a survival mechanism for energy conservation.

“I suspect and I'll tell you another reason why I don't think it's the explanation look at my DHEA level I mean DHEA is the precursor hormone it actually went up so it's not like my body didn't have the substrate to make testosterone it actually had slightly more of it in fact the following week it went from 2:30 the DHEA went from 2:30 down to 180 and the LH and FSH rose the body responded made the testosterone so no I don't think this was a substrate driven issue which is not to say I have an answer to what it was but but I don't think it was substrate issue I do think the thyroid were you you mentioned this guy doesn't need to lose you know talking about yourself doesn't need to lose much more weight here there's nothing coming in and there's sort of there's a preservation going on with the thyroid I'm wondering if the same thing happens with the sex hormones as well that you're not exactly focused on reproducing you're focused on survival at that point you know with a week later see to me that's to me that's a more logical hypothesis that makes more sense then I ran out of cholesterol”