From source: Treatment under doctors care.
http://www.endotext.org/male/male14/male14.htm" Tamoxifen, also an antiestrogen, has been studied in 2 randomized, double-blind studies in which a statistically significant regression in breast size was achieved, although complete regression was not documented (1). One study compared tamoxifen with danazol in the treatment of gynecomastia. Although patients taking tamoxifen had a greater response with complete resolution in 78 percent of patients treated with tamoxifen, as compared to only a 40 percent response in the danazol-treated group, the relapse rate was higher for the tamoxifen group (46). Although complete breast regression may not be achieved and a chance of recurrence exists with therapy, tamoxifen, due to relatively lower side effect profile, may be a more reasonable choice when compared to the other therapies. If used, tamoxifen should be given at a dose of 10 mg twice a day for at least 3 months (30). An aromatase inhibitor, testolactone, has also been studied in an uncontrolled trial with promising effects (51). Further studies must be performed on this drug before any recommendations can be established on its usefulness in the treatment of gynecomastia. Newer aromatase inhibitors such as anastrozole and letrozole may have therapeutic potential but no study has been published to confirm its efficacy in treatment of gynecomastia. (32)
SUMMARY
In summary, gynecomastia is a relatively common disorder. The causes of its development range vastly from benign physiologic processes to rare neoplasms. Thus, in order to properly diagnose the etiology of the gynecomastia, the clinician must understand the hormonal factors involved in breast development. Parallel to female breast development, estrogen, along with GH and IGF-1 is required for breast growth in males. Since a balance exists between estrogen and androgens in males, any disease state or medication that can increase circulating estrogen or decrease circulating androgen, causing an elevation in the estrogen to androgen ratio, can induce gynecomastia. Due to the diversity of possibly etiologies, including neoplasm, performing a careful history and physical is imperative. Once gynecomastia has been diagnosed, treatment of the underlying cause is warranted. If no underlying cause is discovered, then close observation is appropriate.
If the gynecomastia is severe, however, medical therapy can be attempted and if ineffective, glandular tissue can be removed surgically. "
There may be hope for reduction without surgery for the young men. It is not self treatment.
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