Original articleSexual hormones and erectile function more than 6 years after bariatric surgery
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.
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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).