The following article pretty much says that when masturbating, your blood levels of several of the listed hormones increase. There is also a correlation between these hormones in the semen as in the blood. leading one to belive that when you ejaculate, you release some of these hormones from the blood.
however, I am very skeptical. the body has an amazing ability to adapt to nearly anything physiological. If you lose some hormones, then a feedback mechanism will allow you to make more.
sometimes the consequences of this feedback mechanism can change your physiology (such as fatigue, etc)
anyway, here's one article you guys might like:
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Endocrine effects of masturbation in men
K Purvis, BM Landgren, Z Cekan, and E Diczfalusy
The levels of pregnenolone, dehydroepiandrosterone (DHA), androstenedione, testosterone, dihydrotestosterone (DHT), oestrone, oestradiol, cortisol and luteinizing hormone (LH) were measured in the peripheral plasma of a group of young, apparently healthy males before and after masturbation. The same steroids were also determined in a control study, in which the psychological antipation of masturbation was encouraged, but the physical act was not carried out. The plasma levels of all steroids were significantly increased after masturbation, whereas steroid levels remained unchanged in the control study. The most marked changes after masturbation were observed in pregnenolone and DHA levels. No alterations were observed in the plasma levels of LH. Both before and after masturbation plasma levels of testosterone were significantly correlated to those of DHT and oestradiol, but not to those of the other steroids studied. On the other hand, cortisol levels were significantly correlated to those of pregnenolone, DHA, androstenedione and oestrone. In the same subjects, the levels of pregnenolone, DHA, androstenedione, testosterone and DHT, androstenedione and oestrone. In the same subjects, the levels of pregnenolone, DHA, androstenedione, testosterone and DHT in seminal plasma were also estimated; they were all significantly correlated to the levels of the corresponding steroid in the systemic blood withdrawn both before and after masturbation. As a practical consequence, the results indicate that whenever both blood and semen are analysed, blood sampling must precede semen collection.
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