Hypogonadism in men with multiple sclerosis: Prevalence and clinical associations.

It has been hypothesized that multiple sclerosis (MS) has hormonal influences, and testosterone may have anti-inflammatory functions in this context. Given prior reports of lower testosterone levels in men with MS in archival serum samples, we evaluated the prevalence of hypogonadism in the clinical setting and its association with disability in men with MS. Subjects were screened for symptoms of hypogonadism using a clinical instrument, and those with positive screens had total and free morning testosterone levels checked. Of the 64 subjects who were screened, 50 (78%) had positive results, and 46 (92%) had morning testosterone levels checked. Among the latter, 5 were found to have testosterone levels below lower limit of normal. Other than the expected inverse relation with BMI, testosterone did not correlate with demographic or disease related factors. Baseline testosterone did not predict risk of EDSS or T25-FW progression or future MRI activity.