Good work, now we know how to block estrogen efficiently. Now you probably want to jack up HDL cholesterol levels (as this is the starting point in the steroidal pathway).
http://www.ncbi.nlm.nih.gov/pubmed/2649645 <- Long story short, a healthy mix of monounsaturated and saturated fats is a good starting point.
http://www.ncbi.nlm.nih.gov/pubmed/16950175 <- As is Niacin, for increasing HDL.
None of that at all matters if it ends up as some catabolic corticoid. As you can see, CYP17 is what makes the anabolic hormones.
http://www.fasebj.org/cgi/content/abstract/6/2/719So drink coffee. Or, any other inhibitor of cAMP breakdown, which includes anything caffeine bearing. Watch out for the catabolic corticoid release of caffiene, though. Read the abstract at the top of the first page, phospholipids - sunflower oil, soy lecthin, phosphatidylcholine, etc - also induce CYP17.
http://endo.endojournals.org/cgi/reprint/147/11/5249.pdf <--To the point where, apparently, increase in phospholipid synthesis is the major contribution of cAMP.
http://www.pubmedcentral.nih.gov/articlerender.fcgi?artid=2099220^Once you've got all this HDL shunted into DHEA (which you can buy in supplement form in some places), it's ending up as a steroidal hormone - there's no way back.
At that point it makes sense to block the conversion into estrogen or estradiol, so you might as well block it with CYP19 inhibitors as have been mentioned by the poster above me. Or alternatively, indole-3-carbinol which is found in cruciferous vegetables like cabbage or broccoli - blend it to a pulp and drink it raw.
There you have it, a way to naturally increase your testosterone levels. This probably doesn't mean much if you can't increase the amount of FREE (in the blood) testosterone though, so as soon as I can find out I'll post it here lol. By the way I got this information pretty much word for word from a poster on this thread
http://www.totse.com/community/showthread.php?p=10468526#post10468526