MadSci Network: Medicine

Re: Why is there pubic hair going on my penis and my testicals

Date: Thu Feb 6 14:56:55 2003
Posted By: David Mallory, Faculty, Biological Sciences, Marshall University
Area of science: Medicine
ID: 1041895450.Me


Thanks for your question.  Many boys your age are having the same 
question! You are experiencing some of the body changes which occur when 
you go through puberty.  Puberty is the time when your body begins 
changing from a boy to a man.  During this time, your testicles are 
releasing more and more testosterone. Testosterone is a hormone or 
chemical which acts on many parts of your body to make it look and act 
like a man rather than a boy.  

Testosterone will cause the muscles of your arms and chest to get bigger 
and stronger. It will cause the layer of fat under your skin to thin in 
places like your belly and your chest.  You may experience a tenderness 
and puffiness in your nipples.  Sometimes the nipples become so sensitive 
that even the pressure of your shirt may cause discomfort.  Testosterone 
will cause hair to grow in places you have not had hair before, like under 
your arms, on your face, and around your genitals (penis and scrotal 
sac).  The hair on your head will begin to grow in a different pattern so 
that eventually, your hairline will move away from your forehead in a male 
distribution pattern.  You will also notice that your voice is changing to 
become deeper as the Testosterone thickens your vocal folds.

All of the things described are normal events and you should not worry 
about them.  I have included a couple of web addresses which will give you 
more information.

Thanks for reading

Dr. David Mallory
Associate Professor
Department of Biological Sciences
Marshall University
Huntington WV

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