MadSci Network: Medicine

Re: How much semen does a average man can produce in his lifetime

Date: Tue Nov 6 08:26:42 2001
Posted By: David Mallory, Faculty, Biological Sciences, Marshall University
Area of science: Medicine
ID: 1004159635.Me

Well Andrew, talk about world record requests!

There is a relatively good website on questions such as yours. This is .  

1) Seminal volume:  Human males produce approximately 0.4 ml of seminal 
   plasma each day of abstinance.  The average ejaculate measured in 1300 
   volunteers is 3.2 +/- 1.4 ml as reported by Dr. Aquiles Sombrero in The 
   Journal of Fertility and Sterility. Maximal volumes of 10-11 ml have      
   been recorded.  As abstinance continues, seminal volume will be resorbed       
   by the male reproductive tract. This insures that the semen is of good 
   quality at ejaculation.  There is really no definitive way to answer the 
   question of how much semen can be ejaculated in a lifetime.  

2) According to the web site listed above, Sean Stewart of the UK was the 
   youngest male (12 years) to father (1998)a child.  The age a first 
   ejaculation is a tough question to answer.  Usually it is assumed that 
   puberty is required for the maturation of the accessory organs of the     
   male reproductive system.  As these organs/glands require testosterone   
   for their proper function.  However, very young babies do have erections   
   and often masturbate by rubbing the penis on blankets or sheets. It is   
   not likely that these events ever lead to an ejaculation.

3) According to, the longest penis on record is 14 
   inches as recorded by Dr. David Reuben and reported in the book    
   "Everything You Always Wanted to Know About Sex", 1969. The longest 
   penis medically verified is 13.5 inches in length and 6.25 inches in 
   diameter as reported in the early 20th century by Dr. Robert L.    
   Dickinson. In the reports by Kinsey and also by  Masters and Johnson, 
   maximum penis lenghts of 9.5 - 12 inches were reported.

4) The human testis averages 4 cm in length and 2.5 cm in diameter. The 
   average mass is 10-14 grams.  There are disease states such as 
   elephantiasis, which is caused by a blockage of lymph fluid drainage by 
   parasitic worms. A man in Africa was afflicted with this disease and had 
   a scrotal weight of 154 lbs and diameter of 24 inches.  The weight of 
   the penis is much tougher to estimate as this is an organ which traps 
   large quantities of blood to achieve erection, but allows that blood to 
   flow out during periods of flaccidity, so the weight varies with sexual 

I hope this satisfies your curiosity

David S. Mallory, Ph.D.
Associate Professor of Biological Sciences
Marshall University
Huntington, WV..USA

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