['The relationship between erectile dysfunction and endothelial dysfunction has been described and is associated with adverse cardiac events. Endothelial dysfunction is believed to precede erectile dysfunction. Our objective was to characterize the prevalence of subjective erectile dysfunction, endothelial dysfunction and commonly related comorbidities in a population of men undergoing wellness screening.', 'A total of 205 men presented for wellness screening. They underwent testing for endothelial dysfunction via peripheral arterial tonometry and completed a health screening questionnaire. Reactive hyperemia index scores were generated by peripheral arterial tonometry testing. A reactive hyperemia index score of 1.67 or less defined endothelial dysfunction. The Student t-test and Fisher exact test were performed for continuous and categorical variables, respectively. The association of endothelial dysfunction, erectile dysfunction and various comorbidities was calculated using univariate and multivariable analyses.', 'Of 205 men 47 reported subjective erectile dysfunction. Median age was 44 years old. The mean reactive hyperemia index in patients with erectile dysfunction was significantly lower than in patients without erectile dysfunction (1.63 vs 1.87, p = 0.001). Endothelial dysfunction was more common in men with than without erectile dysfunction (55% vs 36%, p = 0.027). Multivariable analysis revealed that men with erectile dysfunction and obesity were twofold more likely to have concomitant endothelial dysfunction (OR 2.45, 95% CI 1.13-4.24, p\xa0= 0.02 and OR 2.08, 95% CI 1.16-3.75, p = 0.01, respectively).'] Is erectile Dysfunction Predictive of Endothelial Dysfunction in a Well Visit Population?