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somewhat flawed study in that they looked at serum sex hormones to evaluate men with gynecomastia compared to controls.  A better eval would have been of saliva or blood spot.  Free levels will show more subtle changes physiologically than will serum as to the sex hormones.  The study did find decreased sexual function in the men with gynecomastia--indicating hormone issues not picked up by the serum.

This is what amounts to science?  As if high estrogen production from overdosing Testosterone only results in gynecomastia.  This study is trying to validate doping utilizing testosterone by saying that no one listed gynecomastia as the reason for AI therapy?!?! No evaluation on PSA, TNF-alpha, CRP...was done.  This study is worthless.

This is just an abstract due to the publication date.  However, this study, though small, found that elevated estradiol and estrone levels preceded myocardial infarctions in small study group (15).  The surprise was that physical symptoms of slow beard growth, loss of libido, and gynecomastia preceded the events.  Also, the testosterone levels were normal.  Got that: elevated estrogen levels with normal testosterone levels result in significant symptoms.

Great, but older, discussion of aromatase link to gynecomastia in men.

arimidex, also known as anastrozole, is shown to be an effective aromatase inhibitor in men.  These case studies used arimidex to successfully stimulate testosterone production by limiting testosterone to estrogen production.  This was found to be useful in the treatment of gynecomastia.

Presentation of a familial incidence of male gynecomastia and hypogonadotropic hypogonadism via peripheral aromatase activity.

common blood pressure medication linked to gynecomastia in men. This reveals that amlodipine interferes with testosterone and estrogen balance

Again, Testosterone and here Estradiol are merely there for libido and sex.  What tunnel vision?!  What about hsCRP?  What about fibrinogen?  What about IL-1beta?  What about TNF-alpha?  These inflammatory cytokines have all been reported to elevate as a result of estrogen production in men.   And PSA?  No mention of it here.   This linear, tunnel vision thinking on hormones has got to stop! The study points out that all clients were using AIs and SERMs irregardless of whether they had elevated estrogens or not.  That is not a well designed study.  One group should have had AI's if elevated estrogens were present and another group should not--this would compare the effects of aromatase activity.  Second, this was simply a retrospective chart review.  Third, a 50% conversion of 34,000 + men is very high when you look at the literature.  Fourth, they point to gynecomastia as a means of negative?  The cardiovascular implications are more significant.  These studies just seem to focus on superficial things.  Fifth, did libido problems exist before?  What were the free levels?   This falls in the paucity of data (2 studies) that point to excessive lowering of estradiol effecting libido and sexual performance.

aromatase inhibition therapy shown to reduce and/or eliminate man boobs in young boys with sertoli cell tumors.