Little is known about the effects of weight loss surgery on male reproductive health. This study will investigate the effect of bariatric surgery on male infertility by evaluating sexual health, blood hormone levels, and semen parameters before and after roux-en-y bariatric surgery.
Obesity is a worldwide epidemic that has numerous health consequences including male infertility. Prior studies have shown a variety of health benefits with bariatric surgery, including an improvement/resolution in diabetes and a significant improvement in serum testosterone levels. Based upon preliminary data from the literature, the investigators hypothesize that bariatric surgery is associated with a transient decrease followed by a robust long-term improvement in semen parameters including DNA fragmentation and oxidative stress. To test this hypothesis, the investigators propose a prospective observational study examining changes in hormone and semen parameters over the 12 months following Roux-en-Y gastric bypass surgery. The investigators will correlate these changes to weight loss, changes in subjective sexual function, and advanced semen parameters including DNA fragmentation. If successful, this study will conclusively identify a new modifiable cause for male infertility and suggest an additional medical indication for bariatric surgery in obese infertile men.
Study Type
OBSERVATIONAL
Enrollment
25
Sperm counts will be determined by semen analysis.
Blood test for LH, FSH, testosterone, and estradiol
Roux-en-Y Gastric Bypass
Cleveland Clinic Foundation
Cleveland, Ohio, United States
Changes in sperm concentration
Changes in sperm concentration on semen analysis
Time frame: Baseline to 12 months
Weight loss
Change in weight following bariatric surgery
Time frame: Baseline to 12 months
Changes in sexual health
Change in International Index of Erectile Function (IIEF) score, a validated questionnaire with scores ranging from 1 (significant erectile dysfunction to 30 (no erectile dysfunction).
Time frame: Baseline to 12 months
Changes in reproductive hormones
Changes in FSH, LH, testosterone, and estrogen blood levels
Time frame: Baseline to 12 months
Changes in seminal oxidative stress
Changes in seminal reactive oxygen species
Time frame: Baseline to 12 months
Changes in sperm morphology
Changes in percent normal sperm morphology on semen analysis
Time frame: Baseline to 12 months
Changes in seminal DNA fragmentation
Changes in seminal DNA fragmentation rate on semen analysis
Time frame: Baseline to 12 months
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International Index of Erectile Function is a validated 5-question survey examining sexual health in men