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Int J Obes (Lond). 2016 Jan;40(1):162-70. doi: 10.1038/ijo.2015.139. Epub 2015 Jul 29.

Effects of long-term treatment with testosterone on weight and waist size in 411 hypogonadal men with obesity classes I-III: observational data from two registry studies.

Author information

1
Global Medical Affairs Andrology, Bayer Pharma, Berlin, Germany.
2
Department of Urology, Gulf Medical University, Ajman, UAE.
3
Institute for Urology and Andrology, Segeberger Kliniken, Norderstedt, Germany.
4
Department of Preventive Medicine, Men's Health Program, Dresden International University, Dresden, Germany.
5
Department for Epidemiology and Statistics, Boston University School of Public Health, Boston, MA, USA.
6
Private Urology Practice, Bremerhaven, Germany.

Abstract

BACKGROUND/OBJECTIVES:

Long-term testosterone replacement therapy (TRT) up to 5 years has been shown to produce progressive and sustainable weight loss (WL) in hypogonadal men. This study investigated effects of long-term TRT up to 8 years in hypogonadal men with different obesity classes.

SUBJECTS/METHODS:

From two independent observational registries we identified a total of 411 obese, hypogonadal men receiving TRT in urological clinics. The effects of TRT on anthropometric as well as metabolic parameters were studied for a maximum duration of 8 years, mean follow-up: 6 years. All men received long-acting injections of testosterone undecanoate in 3-monthly intervals.

RESULTS:

In all three classes of obesity, T therapy produced significant WL, decrease in waist circumference (WC) and body mass index (BMI). In patients with class I obesity, mean weight decreased from 102.6±6.4 to 84.1±4.9 kg, change from baseline: -17.4±0.5 kg and -16.8±0.4%. WC in this group of patients decreased from 106.8±7.4 to 95.1±5.3 cm, change from baseline: -10.6±0.3 cm. BMI decreased from 32.69±1.4 to 27.07±1.57, change from baseline: -5.52±0.15 kg m(-2). In patients with class II obesity, weight decreased from 116.8±6.9 to 91.3±6.3 kg, change from baseline: -25.3±0.5 kg and -21.5±0.4%. WC decreased from 113.5±7.5 to 100.0±5.4 cm, change from baseline: -13.9±0.4 cm. BMI decreased from 37.32±1.45 to 29.49±1.71, change from baseline: -8.15±0.17 kg m(-2). In patients with class III obesity, weight decreased from 129.0±5.6 to 98.9±4.8 kg, change from baseline: -30.5±0.7 kg and -23.6±0.5%. WC decreased from 118.5±5.6 to 103.8±4.9 cm, change from baseline: -14.3±0.4 cm. BMI decreased from 41.93±1.48 to 32.46±1.59, change from baseline -9.96±0.29 kg m(-2).

CONCLUSIONS:

Testosterone therapy appears to be an effective approach to achieve sustained WL in obese hypogonadal men irrespective of severity of obesity. Based on these findings we suggest that T therapy offers safe and effective treatment strategy of obesity in hypogonadal men.

PMID:
26219417
PMCID:
PMC4722240
DOI:
10.1038/ijo.2015.139
[Indexed for MEDLINE]
Free PMC Article

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