Sarcopenia is associated with severe erectile dysfunction in older adults: a population-based cohort study.
Level 3 - non-randomized controlled study
Prospective cohort study
PubMed 32306710 · doi:10.3904/kjim.2019.148
What was done
A prospective cohort study evaluated 519 community-dwelling older men (mean age 74.0 years) in Pyeongchang, Korea, between 2016 and 2017. Sarcopenia was defined using the Asian Working Group for Sarcopenia algorithm (muscle mass, grip strength, gait speed). Severe erectile dysfunction (ED) was defined as a 5-item International Index of Erectile Function (IIEF-5) score < 8. Logistic regression models estimated the association between baseline sarcopenia components and baseline/incident severe ED at 1 year, adjusting for age, cardiovascular risk factors, depression, and polypharmacy.
What was found
The overall baseline prevalence was 52.4% for severe ED and 31.6% for sarcopenia. Severe ED was more prevalent in men with sarcopenia than in those without (73.2% vs. 42.8%; adjusted odds ratio [aOR] 1.89; 95% CI, 1.18 to 3.03; p = 0.008). Over 1 year of follow-up, incident severe ED was independently associated with slow gait speed (aOR 2.80; 95% CI, 1.18 to 6.62; p = 0.019) and decreased muscle mass (aOR 2.54; 95% CI, 1.11 to 5.81; p = 0.027), whereas decreased grip strength was not significantly associated (aOR 0.76; 95% CI, 0.30 to 1.91; p = 0.564).
Why it matters
These findings indicate that physical frailty and muscle loss independently predict severe sexual dysfunction in older men, suggesting physical performance measures may serve as indicators of worsening vascular and general health.
Limits
The study was conducted in a single rural region in Korea, limiting generalizability. The follow-up duration was short (1 year), erectile function was assessed using a self-reported questionnaire rather than physiological measurements, and unmeasured confounders such as serum testosterone levels were not reported in the abstract.
Cited by
- partial Men who maintain their muscle mass through resistance exercise are three times less likely to develop erectile dysfunction.