Serum folic acid levels and erectile dysfunction: A meta-analysis and systematic review

source extracted confidence: high 2026-04-09
#erectile-dysfunction #folic-acid #folic-acid-deficiency #humans #male

Serum folic acid levels and erectile dysfunction: A meta-analysis and systematic review

Xu et al., 2021 | Andrologia | Meta Analysis

Citation

Xu Jiangnan, Wang Chao, ... Zhang Jianglei. Serum folic acid levels and erectile dysfunction: A meta-analysis and systematic review. Andrologia. 2021-May;53(4):e14003. doi:10.1111/and.14003

Abstract

The aim of this study was to assess the relationship between serum folic acid (FA) levels and erectile dysfunction (ED) through a meta-analysis. A research was conducted in MEDLINE via PubMed, Cochrane Library, EMBASE and Web of Science up to 22 November 2020 to identify studies related to FA and ED. Two authors independently screened the literature, evaluated methodological quality and extracted the data. We used RevMan5.3 and STATA 14.0 for meta-analysis. A total of six studies including 1,842 participants were included, and the results showed that the FA levels in the non-ED group were significantly higher than those in the ED group (MD = 3.37, 95% CI 1.49-5.52, p = 0.004). Subgroup analysis indicated that with the increase in ED severity, the difference in FA levels between groups was more obvious (MD: 1.99 vs. 4.63 vs. 5.63). The differences in FA levels between groups seem more significant in the younger group (MD = 4.87, 95% CI 2.58-6.89, p < 0.001) than in the older group (MD = 3.15, 95% CI 2.21-4.08, p < 0.001). In conclusion, FA deficiency is closely related to ED, and the degree of FA deficiency may reflect the severity of ED. In addition, the association seems to be more pronounced in the younger group.

Key Findings

In addition, the association seems to be more pronounced in the younger group.

Outcomes Measured

  • Requires manual extraction

Population

Field Value
Population See abstract
Sample Size 1842
Age Range See abstract
Condition deficiency

MeSH Terms

  • Erectile Dysfunction
  • Folic Acid
  • Folic Acid Deficiency
  • Humans
  • Male

Evidence Classification

  • Level: Meta Analysis
  • Publication Types: Journal Article, Meta-Analysis, Systematic Review
  • Vertical: folate

Provenance

Source extracted via PubMed E-utilities API on 2026-04-09