A Meta-Analysis of Placebo Controlled Testosterone Studies Finds TRT Safe

Nelson Vergel

Founder, ExcelMale.com
Efficacy and safety of testosterone replacement therapy in men with hypogonadism: A meta-analysis study of placebo-controlled trials


Abstract

The purpose of the present meta-analysis was to evaluate the efficacy and safety of testosterone replacement therapy in men with hypogonadism. A search was conducted for appropriate randomized controlled trials and the data from 16 trials were pooled. The intended primary outcome of the present study was to determine the efficacy and safety of testosterone replacement therapy. The current data demonstrated that scores for Aging Male Symptoms (AMS) were significantly reduced following testosterone replacement therapy, with a mean decrease in AMS score of 1.52 [95% confidence interval (CI), 0.72 to 2.32; P=0.0002]. Testosterone replacement therapy increased lean body mass [mean difference (MD), 1.22; 95% CI, 0.33 to 2.11; P=0.007], reduced fat mass in a non&#8209;significantly manner (MD, &#8209;0.85; 95% CI, &#8209;1.74 to 0.04; P=0.06) and significantly reduced total cholesterol (MD, &#8209;0.16; 95% CI, &#8209;0.29 to &#8209;0.03; P=0.01). No significant differences were identified in body weight (MD, 0.09; 95% CI, &#8209;1.13 to 1.31; P=0.89), body mass index (MD, 0.10; 95% CI, &#8209;0.62 to 0.82; P=0.78) or bone mineral density (MD, &#8209;0.01; 95% CI, &#8209;0.03 to 0.02; P=0.60). Average prostate volume increased (MD, 1.58; 95% CI, 0.6 to 2.56; P=0.002) following testosterone replacement therapy, but the levels of prostate&#8209;specific antigen (PSA) (MD, 0.10; 95% CI, &#8209;0.03 to 0.22; P=0.14) and the International Prostate Symptom Scores (MD, 0.01; 95% CI, &#8209;0.37 to 0.39; P=0.96) did not change. In conclusion, testosterone replacement therapy improves quality of life, increases lean body mass, significantly decreases total cholesterol, and is well&#8209;tolerated and safe for men with hypogonadism who are exhibiting PSA levels of <4 ng/ml.


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Reference:
Guo, C., Gu, W., Liu, M., Peng, B., Yao, X., Yang, B., Zheng, J."Efficacy and safety of testosterone replacement therapy in men with hypogonadism: A meta-analysis study of placebo-controlled trials". Experimental and Therapeutic Medicine 0, no. 0 (1899): 0-0.


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Understanding Your Hormones

Estradiol (E2)

A form of estrogen produced from testosterone. Important for bone health, mood, and libido. Too high can cause side effects; too low can affect well-being.

DHT

Dihydrotestosterone is a potent androgen derived from testosterone. Affects hair growth, prostate health, and masculinization effects.

Free Testosterone

The biologically active form of testosterone not bound to proteins. Directly available for cellular uptake and biological effects.

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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