I took a break from diving into my hormonal issues this fall as I had a pretty hectic course load with Physics I and Calculus I - classes I NEEDED to get A's in. After classes were over I had some blood drawn so I could begin the Axiron. Here are my numbers:
December 2013: Not on TRT
DHT: 27 (30 - 85)
Total Testosterone: 432 (348 - 1197)
Free Testosterone: 11.9 (9.3 - 26.5)
I've been on 3 pumps of Axiron (plus Arimidex) for 2 weeks now and I feel no different. I plan on having my blood drawn to see where I stand on this protocol. I decided not to be too bummed about the outcome and had sex with my girlfriend - just to make the most of what I have. I noticed that, while still having a very, very low libido, I was getting into it a little bit. After ejaculation, I had zero libido. I was wondering about the physiological changes that take place during this period that results in the refractory period. I came across prolactin as a theory to the loss of libido that men experience post-ejaculation. I remember my Prolactin levels being "normal" so I decided to look at my history, just to humor myself.
August 18, 2010
Prolactin 7.5 (Range 2-18)
July 7, 2011
Prolactin: 4.9 (Range 2-18)
I started to think, "What if the reference range for Prolactin is like Testosterone? We all know you could technically have an "in-range" value for Testosterone but that doesn't always infer healthy or an optimal number. I've read that high levels of Prolactin can reduce libido and always thought my values were optimal. However, I pulled up this interesting article that states a low level of prolaction can ALSO reduce libido.
Hypoprolactinemia: a new clinical syndrome in patients with sexual dysfunction.
INTRODUCTION:
The physiological role of prolactin (PRL) in male sexual behavior is poorly understood. Conversely, the association between PRL pathological elevation in both reproductive and sexual behavior is well defined.
RESULTS:
After adjustment for confounders anxiety symptoms decreased across PRL quartiles (I: <113 mU/L or 5 ng/mL; II: 113-156 mU/L or 5.1-7 ng/mL; III: 157-229 mU/L or 7.1-11 ng/mL; IV: 229-734 mU/L or 11.1-34.9 ng/mL). Patients in the lowest PRL quartile showed a higher risk of metabolic syndrome (MetS; odds ratio [OR] = 1.74 [1.01-2.99], P < 0.05), arteriogenic ED (peak systolic velocity at PDU < 35 cm/sec; OR = 1.43 [1.01-2.03], P < 0.05), and premature ejaculation (PE; OR = 1.38 [1.02-1.85]; P < 0.05). Conversely, comparing subjects with PRL-secreting pituitary adenomas (N = 13) with matched controls, no significant difference was observed, except for a higher prevalence of hypoactive sexual desire in hyperprolactinemia.
CONCLUSIONS:
Our findings demonstrate that, in subjects consulting for sexual dysfunction, PRL in the lowest quartile levels are associated with MetS and arteriogenic ED, as well as with PE and anxiety symptoms. Further studies are advisable in order to confirm our preliminary results in different populations.
So it sounds like Prolactin is similar to E2 - too high is bad yet too low is just as bad. What is also interesting to note is that Prolactin increases amounts of 5-alpha-reductase enzymes that is responsible for DHT. Perhaps the reason for my low levels of DHT is because of low amounts of 5-alpha-reducatase because of my low levels of Prolactin! Not trying to get my hopes up but I'll be looking into this.