ROAD DOG said:
I am in week 5 or 6 of my cycle(500sust/600eq),about the 2nd week of my cycle my sex drive went crazy,that is all I could think about,I was always hard.Now that a few weeks have past I can tell my sex drive is dropping,and I am having a hard time getting hard.This happens to me everytime I am on a cycle,the affects of the test always fade away after a while.My gear is legit,I am making great gains and feeling all the effects of a good cycle,it just seems weird to be having low sex drive and erection problems while taking 500mg Sustanon (sust) a week.Is it possible my estrogen levels are getting high,wich would cause sexual disfunctions?
As SC stated, this problem may be more prevalent than discussed openly (out of embarassment).
SHBG increases with Test (exo or endo) increases as a control mechanism of Free Test. Genetics and age are amoung the principal manipulators of these activities from one person to another, so this is WHY one person will be a walking hormone throughout a test cycle and one will not be. (Amounts of unbound or "FREE Test" being the major discerning factor among a few other minor factors that are indirectly involved as well of course).
Testosterone functions as an aphrodisiac hormone in our brains cells; however testosterone that becomes bound to serum globulin (SHBG) is not available to cell receptor sites and FAILS to induce a libido effect. It is, therefore, desirable to increase levels of "free testosterone" in order to ignite sexual arousal in the brain.
When this hormone :sex hormone-binding globulin (SHBG), binds to test, it causes TEst to lose its biological activity and becomes known as "bound testosterone," as opposed to the desirable "free testosterone."
There are actually plenty of studies that show that the decline in sexual interest with advancing age is not always due to the amount of testosterone produced, but rather to the increased binding of testosterone to globulin by SHBG. This explains why some older men who are on testosterone replacement therapy do not report a long-term aphrodisiac effect. That is, the artificially administered (exo)testosterone becomes bound by SHBG, and is not bioavailable to cellular receptor sites where it would normally produce a libido-enhancing effect.
*Nettle Root and Avena Sativa are decent potentiators of SHBG-inhibition. (and are OTC
)
**Nettle Root as stated in the above post has anti-DHT (which could lead to potential lowering of libido) so use caution with this one.
***I have presented ONE POSSIBILITY of your "issue". This phenomenom you are experiencing could be based on several other things as well Talk to your Doc. Have him run a comprehensive sex hormone blood assay. ***