Posted on 08/31/2004 6:52:42 PM PDT by Pharmboy
NEW YORK (Reuters Health) - The more a man ejaculates each week, the lower his sperm levels fall, new research shows. However, this ejaculatory frequency only partly explains why a man's sperm count varies widely each time it's checked.
The findings, which appear in the medical journal Fertility and Sterility, are based on a study of 27 healthy men who provided monthly semen samples and responded to questionnaires regarding ejaculatory frequency, duration of abstinence, and episodes of fever. The subjects were followed for 16 months.
No seasonal variations in sperm levels, movement, or shape were seen, lead author Dr. Elisabeth Carlsen and colleagues, from Rigshospitalet in Copenhagen, note. However, ejaculation frequency was higher in spring months than in the winter months.
As noted, sperm levels fell as weekly ejaculatory frequency increased. Compared with one ejaculation, sperm level fell 29 percent with two ejaculations and by 41 percent with three ejaculations. In contrast, ejaculatory frequency seemed to have no effect on sperm movement or shape.
The sperm characteristics noted in one sample often differed greatly from those observed in a subsequent sample from the same subject. This wide variation dropped markedly when three semen samples were used instead of two. Ejaculation frequency, duration of abstinence, and the presence of a fever episode were small contributors to this variation.
"The majority of the (this) variation remained unexplained," the authors note.
The findings also suggest that "at least three semen samples should be recommended to estimate an individual's semen profile," they add.
SOURCE: Fertility and Sterility, August 2004.
How much did we spend on THIS study?
Anybody who ever donated to a sperm bank knows this- they tell you if your count is low, to not ejaculate for four whole days before going in to "deposit". They now need a study?
And I thought going blind was my biggest concern ...
Flushing the radiator, lowers the effective level of the antifreeze. Duh!
TMI, Pharmboy, TMI.
Just a drop in the bucket...
Like, DUH!
Don't forget those hairy palms...
A friend of mine was having some problems with his urination (don't ask). So the doctor tells him he'll need a sample. The day of the test the nurse hands him a cup and points to the bathroom. My friend walks in and a few seconds later walks back out and says, out loud and in front of a group of nurses, "Where are the magazines and videos?" The nurse gets pissed off and yells, "IT'S A URINE SAMPLE!"
The volunteers were mostly seamen.
Martin--you did it again! You made me LOL!!
What a concept!
There's a political lessong to be learned here, somewhere.
Shhhh, now I'm busy counting.
< |:)~
Remember guys!
Every sperm is sacred! ;-)
This story reminds me of my earliest memory. If I recall correctly, I went to the prom with my dad and went home with my mom.
Thank you for posting this. Out of curiosity, does this duplicate any American study on the matter? Thank you, Norski
Fert and Stert is an excellent journal; I do not know if this study replicated earlier studies. One negative for this study is that the numbers of subjects were small.
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