Though it's a popular culture understanding, don't mistake testosterone as the male hormone and estrogen/progesterone as the female hormone. All three are found in every individual, only to varying amounts, or rather, different ratios. A lack of any hormones will have serious health effects, not the least of which being bone density issues as mentioned by previous posters. I think that your best bet would be to get as close a balance of T to E (or E to T) as you can. Hormones keep you healthy!
Lia