Get your health question answered instantly from our pool of 18000+ doctors from over 80 specialties

192 Doctors Online
Doctor Image
Dr. Andrew Rynne

Family Physician

Exp 50 years

I will be looking into your question and guiding you through the process. Please write your question below.

Is penis of a baby formed under the hormonal influence of the testosterone during pregnancy ?

Answered by
Dr. Sumitra Kumar Mukherjee


Practicing since :1964

Answered : 246 Questions

Posted on Sat, 24 Nov 2012 in Child Health
Question: Hello, i would liek to know about testosterone in boys early stages of life. Is a healthy baby born with penis the result of testosterone exposure during pregnancy? thanks
Answered by Dr. Sumitra Kumar Mukherjee 43 minutes later
Thank you for the query but I feel this is not clear.
Would you please elaborate the second part of your question?
Are you trying to know if penis of a baby is formed under the hormonal influence of the testosterone during pregnancy?

Kindest regards
Dr. S.K.Mukherjee
Above answer was peer-reviewed by : Dr. Chakravarthy Mazumdar
Follow up: Dr. Sumitra Kumar Mukherjee 1 hour later
Good Day Doctor XXXXXXX

Yes i want to know if penis of a baby is formed under the hormonal influence of the testosterone during pregnancy ?

Suppose a 14.5 year old CDGP boy, otherwise healthy, takes short course of the weak androgen oxandrolone....would this be his body's first exposure to androgens?

Or is there androgens indigenously produced historically in a healthy 14 year old boy?

Thanks in advance and best Regards,

Answered by Dr. Sumitra Kumar Mukherjee 4 hours later
Thank you for your answer. I do apologize for delay in answering due to some problems with my computer, situation beyond my control. I would like to answer your last query first. You are absolutely right it is the testosterone which forms the penis during pregnancy. I would like to to explain how it happens. A child inherits 50% of chromosomes from each parents including sex chromosomes.
If the child inherits X chromosomes from each parent like XX the child will be female. But if the child inherits X and Y chromosomes like XY child will be male.
Here Y chromosome will totally dominant and Muellerian inhibition substance(MIS) will be produced inside testis that will suppress female sex and lead to growth of male external genitalia. That MIS is like testosterone.
I am going now to your first query.
A male child usually starts reaching puberty usually at the age of 9 to 10yrs. It starts in a part of the brain called hypothalamus. From hypothalamus a hormone is secreted which stimulate pituitary gland to secrete FSH and LH hormone. LH hormone will stimulate Leyding cells in the testis to produce Androgen hormone among which testosterone is one. I therefore conclude a healthy boy of 14.5 should produce testosterone in his body.
Did I answer it? Use any answer clarification before you close our discussion.

Above answer was peer-reviewed by : Dr. Chakravarthy Mazumdar
Follow up: Dr. Sumitra Kumar Mukherjee 2 hours later
Thank you for the advice Dr XXXXXXX

Well i know someone who took oxandrolone when they were 14. They are really concerned that this was the first time androgens circulated in their body, and somewhat upset that it was exogenous. But as you explain it appears androgens are present even in a male baby! .....So can you kindly assure this is definitely the case.

Is there any other signs, other than the male genitalia, to confirm that testosterone is/was present in a male baby and child? Your suggestions and opinion would be greatly appreciated . Thank you Dr XXXXXXX

Best Regards,

Answered by Dr. Sumitra Kumar Mukherjee 1 hour later
Dear XXXXXXX I understand if someone was suffering from Constitutional Delay in
Growth and Puberty and they were treated with Oxandrolone. This is standard treatment
for this condition and showed encouraging results. They should not feel bad about it. I think to find the level of testosterone is to perform blood tests. I do not think there is a good practice to tests for signs in such people who had taken exogenous androgens.
I strongly advise you to see Paediatric endocrinologist if there is a problem persisting.
kindest regards Dr.S.K.Mukherjee
Above answer was peer-reviewed by : Dr. Chakravarthy Mazumdar

The User accepted the expert's answer

Share on
Question is related to
Drug/Medication ,   ,  
Medical Topics ,  

Recent questions on  Neuroendocrinology

doctor1 MD

hello ..from 13 years past I had a benign tumor of the pituitary gland was laparoscopic eradication from the nose then i did not take any treatment after surgery and after 10 years returned to me the same symptoms again, and with m.r.i and blood analysis was to know that the tumor has returned once again and the period Did not come to yet, so now i turn to drugs to reduce the rate of prolactin hormone such as distonex and lactodel and cyclo-progynova And taking another medicine named eltroxen because I suffer from hypothyroidism and the problem now is that I gained a lot of weight and I can not lose weight tried many diets and exercise almost an hour per day, but my weight does not come down now what should I do? My weight is now 80 kg and i m 157 cm height what to do? Help me please and one more thing my hair is very weak on the front and almost empty rarely see clearly the scalp and eyebrows are also very light so can u help me ? thanx alot

doctor1 MD

dear doctor, please what is the way forward for a 23 year old boy that has been diagonised of hypogonadism?. fsh low(6) lh high(23) testotesterone low(2.3) and prolactin level high(25). i have not noticed a significant change in my sex organ since i was small. i have being placed on parlodel since more than a year now but i havee not noticed difference. i am gaining fats all over my body always weak~, weak muscles; changes in body complexion. please i need your help. thanks for your concern

doctor1 MD

I would like to recive an andrologist s advice: is low response to sex visual stimuli (e.g. a pretty woman for an heterosexual man as I am) though in presence of normal nightime erections related to low levels of testosterone? I am 38 years old and had good sexual life up to 2 yrs ago, when the early sympotms appeared

doctor1 MD

preceding symptoms are: enlargement of body tissue, bones of face and jaw are becoming thicker, hands and feet look larger, weight gain, fatiuge, extremely low sperm count, and recently blurry and double vision. told its related with the endocrine system

doctor1 MD

Hi. When I was younger I had steroid treatment to increase my height, as steroid is known to increase growth hormones in adolescent boys. Now I have anxiety this treatment had effect on my bone, and the effects are permanent. Do bones renew and...

doctor1 MD

I take.10 synthroid and .15 hydrocortisone daily. I recently had blood test and cortisone without meds was .6 and my Free T4 was low at .98. I have suffered for over 1.5 months with dry mouth syndrome . I saw an ENT who told me to suck on lemon...

doctor1 MD

I, my name is XXXXXXX 45 years old, recently i was diagnosed by my doctor to have mood disorder with depression due to stress and fatigue from work... That result in a 3 1/2 months stop from work. Then he prescrided me this medication you must...