Elsevier

Surgery for Obesity and Related Diseases

Volume 9, Issue 5, September–October 2013, Pages 636-640
Surgery for Obesity and Related Diseases

Original article
Sexual hormones and erectile function more than 6 years after bariatric surgery

https://doi.org/10.1016/j.soard.2012.06.010Get rights and content

Abstract

Background

The long-term effect of bariatric intervention on androgenic hormones and erectile function is not well known. In a prospective comparative study, the profile of sexual function was ascertained. The setting was a large public academic hospital.

Methods

A total of 51 patients were included in the present study. Of these, 23 were in the bariatric surgery cohort (with 6–14 yr of follow-up), 14 were obese controls, and 14 were lean controls, aged 30–65 years. The groups were matched for age and, in the case of obese controls, the current body mass index. The measurements included orchidometry, an assessment of gynecomastia, the International Index of Erectile Function, the Aging Males Symptoms questionnaire, the measurement of 12 hormones, and general biochemical measurements.

Results

Bariatric patients lost substantial weight (59.8 ± 12.1 versus 35.1 ± 7.7 kg/m2), albeit residual obesity was the rule, with varying degrees of sleep apnea, hypertension, and glucose/lipid aberrations. The total and free testosterone and sex hormone-binding globulin levels were greater in the gastric bypass patients than in the obese controls and comparable to those of lean individuals. The International Index of Erectile Function final score revealed no differences; however, the domains of erectile dysfunction (P = .015) and overall satisfaction (P = .028) were better than those in the obese controls, although still lower than those in the lean group. The correlation between the body mass index and the International Index of Erectile Function score in the entire population (n = 51) was negative, as expected, with, however, low r and r2 indexes (.354 and .125, respectively).

Conclusion

The findings are consistent with long-term normalization of androgenic hormones but less than complete normalization of erectile function. This seeming contradiction might be explained by the remaining or relapsing obesity or its co-morbidities.

Section snippets

Experimental design, eligibility, and patient enrollment

This was a prospective, observational, controlled cohort study. Male patients (n = 51) were consecutively recruited for clinical and biochemical assessment, including retrospective information collected from the hospital files. The inclusion criteria were age 30–65 years and informed consent. The exclusion criteria were additional surgical procedures or “take down” of the original operation (bariatric cohort), a history of pituitary, adrenal, thyroid, or testicular disorders, the use of

Results

All patients agreed to the protocol, and there were no exclusions. No patient was addicted to alcohol or drugs, and the proportion of smokers was not different among the 3 groups (21.7%, 21.4%, and 13.3%, P = .512). The follow-up duration in the bariatric cohort was 115.5 ± 35.6 months (range 80–195), and the BMI decrease was remarkable, although still in the obese range, suggesting weight regain (58.1 ± 12.1 versus 35.1 ± 7.7 kg/m2, P < .001).

The principal results are listed in Table 1. No

Discussion

Obesity affects all levels of the hypothalamic-pituitary-gonadal axis, resulting, not only in androgen deficiency and erectile dysfunction, but also infertility [2]. Sexual activity is highly relevant for health and quality of life in both middle-age and elderly men and has been associated with an increased life span [4]. To the best of our knowledge, the present study is the first investigation revealing that the androgen results found shortly after bariatric interventions are long-lasting

Conclusion

The patients who had undergone Roux-en-Y gastric bypass 6–16 years earlier displayed elevated total and free testosterone and SHBG levels compared with those in the obese controls and comparable to those in the lean controls. In contrast, the erectile function scores were inferior to those of the lean controls, suggesting incomplete functional restoration. Relapsing obesity and recurring co-morbidities might explain such an outcome [9], [10], [11].

Disclosures

The authors have no commercial associations that might be a conflict of interest in relation to this article.

References (11)

There are more references available in the full text version of this article.

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Supported in part by a grant from the Brazilian National Research Council (PQ2 - JF) 302915/2011-7.

Supported in part by National Council for Scientific and Technological Development (grant 302915/2011-7).

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