Metformin improves semen and testosterone in men with metabolic syndrome

Nelson Vergel

Founder, ExcelMale.com
Metformin improves semen characteristics of oligo-terato-asthenozoospermic men with metabolic syndrome


Fertility and Sterility
Volume 95, Issue 6, May 2011, Pages 2150–2152


Forty-five patients (age range: 26 to 44 years) were evaluated. Five patients experienced mild side effects such as nausea and diarrhea without interrupting treatment. The patients' metabolic and hormone profiles are presented in Table 1. Although no statistically significant differences were observed in the patients' BMI, waist circumference, or triglyceride levels before and after metformin treatment, the HOMA index and plasma SHBG levels statistically significantly decreased after metformin treatment (P<.001 and P<.001, respectively). The FSH levels were not effected by metformin therapy, but we observed a statistically significant increase in the total testosterone (P<.02), free testosterone (P<.001), and LH (P<.01) levels, and a statistically significant decrease in the E2 (P<.01) level after metformin treatment.
Metformin improved sperm quantity and quality.

NOTE:

[h=2]What is oligoasthenoteratozoospermia?[/b]Oligoasthenoteratozoospermia (OAT) is a condition that includes oligozoospermia (low number of sperm), asthenozoospermia (poor sperm movement), and teratozoospermia (abnormal sperm shape). OAT is the most common cause of male subfertility. Subfertility is when a man cannot get a woman pregnant after 1 year of regular sex without birth control.
 

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Scientific Reference

Lakshman KM, Kaplan B, Travison TG, Basaria S, Knapp PE, Singh AB, LaValley MP, Mazer NA, Bhasin S. The effects of injected testosterone dose and age on the conversion of testosterone to estradiol and dihydrotestosterone in young and older men. J Clin Endocrinol Metab. 2010 Aug;95(8):3955-64.

DOI: 10.1210/jc.2010-0102 | PMID: 20534765 | PMCID: PMC2913038

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