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Urology (Expert Forum)
Influences of penis size
Answered by
Kevin Pho, MD - Internal Medicine
KevinMD.com
Questions in the Urology forum are answered by Dr. Stephen Liroff, affiliated with the Henry Ford Hospital. Topics covered include benign prostate disease, penis curvature, cystisis, kidney stones, pediatric urology, prostate, sexual dysfunction, urinary tract infections (UTI), and urological cancers.
Influences of penis size
by marc209, Aug 17, 2007 12:08AM
Hi.
I've read that the number of androgen receptors and the amount of DHT available to bind to these receptors, during puberty, is what influences penis size. The # of androgen receptors is determine by genetics.
My problem is that I have always had low, below average, free testosterone, which is what gets converted to DHT. The doctors always told me that that value means nothing, but I wasn't waking up with morning erections or masterbating (masturbating). And free testosterone level is an indication of libido. Now I'm affraid that I didn't have enough DHT to bind to the receptors during puberty, and thus my penis didn't grow. I do know that my brothers are much larger than me.
I'm not exactly sure when I finished puberty, but I had full pubic hair by about 16-17 years old. Although, my voice still squeeked until I was 20 and I still have acne at 22. I was wondering that if I took a testosterone supplement during puberty, could it have had any affect on my penis size. What about if I took a supplement around 19 years of age, or do you think my puberty was over by then?
What if I take a testosterone supplement now. Could I possibly see any growth or is it too late (I would be risking hairloss) ? If I didn't produce enough DHT, would I not have had pubic hair or display any characteristics of going through puberty?
How can i determine if I reached my genetically determined size? endocrinologist could help?
I've read that the number of androgen receptors and the amount of DHT available to bind to these receptors, during puberty, is what influences penis size. The # of androgen receptors is determine by genetics.
My problem is that I have always had low, below average, free testosterone, which is what gets converted to DHT. The doctors always told me that that value means nothing, but I wasn't waking up with morning erections or masterbating (masturbating). And free testosterone level is an indication of libido. Now I'm affraid that I didn't have enough DHT to bind to the receptors during puberty, and thus my penis didn't grow. I do know that my brothers are much larger than me.
I'm not exactly sure when I finished puberty, but I had full pubic hair by about 16-17 years old. Although, my voice still squeeked until I was 20 and I still have acne at 22. I was wondering that if I took a testosterone supplement during puberty, could it have had any affect on my penis size. What about if I took a supplement around 19 years of age, or do you think my puberty was over by then?
What if I take a testosterone supplement now. Could I possibly see any growth or is it too late (I would be risking hairloss) ? If I didn't produce enough DHT, would I not have had pubic hair or display any characteristics of going through puberty?
How can i determine if I reached my genetically determined size? endocrinologist could help?
Doctor's Answer
by Kevin Pho, MD, Aug 18, 2007 08:49AM
, Aug 18, 2007 08:49AM
Typically a total testosterone would be enough to diagnose hypogonadism.
A low free testosterone can indeed point to hypogonadism. Obtaining serum LH and FSH levels can be considered to determine whether this is a testicular problem or not.
An endocrinologist would indeed help with the workup. If a cause of the low testosterone cannot be elucidate, a testicular biopsy can be discussed.
Regarding the testosterone supplement, I cannot comment on this without an examination.
Followup with your personal physician is essential.
This answer is not intended as and does not substitute for medical advice - the information presented is for patient education only. Please see your personal physician for further evaluation of your individual case.
Kevin, M.D.
kevinmd_
A low free testosterone can indeed point to hypogonadism. Obtaining serum LH and FSH levels can be considered to determine whether this is a testicular problem or not.
An endocrinologist would indeed help with the workup. If a cause of the low testosterone cannot be elucidate, a testicular biopsy can be discussed.
Regarding the testosterone supplement, I cannot comment on this without an examination.
Followup with your personal physician is essential.
This answer is not intended as and does not substitute for medical advice - the information presented is for patient education only. Please see your personal physician for further evaluation of your individual case.
Kevin, M.D.
kevinmd_
Member Comments (2)
by marc209, Aug 18, 2007 04:40PM
My testosterone levels were low in my blood test, but not below average. I have read that a baseline testosterone is needed and that you can't compare this to the normal range. Is that correct?
by LetsRock, Apr 19, 2008 08:59AM
A related discussion, Dht during adolescents was started.
