Systematic Review and Meta-analysis of the Association Between Metabolic Syndrome and Androgenetic Alopecia

Abstract

The association of androgenetic alopecia with metabolic syndrome has been investigated in several stu-dies, with conflicting results. We conducted a meta-analysis to quantitatively evaluate the risk grade of metabolic syndrome and the metabolic profile in patients with androgenetic alopecia compared with con-trols. In total, 19 articles (2,531 participants) satis-fied the inclusion criteria. The pooled odds ratio for the prevalence rate of metabolic syndrome between the group with androgenetic alopecia and controls was 3.46 (95% CI 2.38–5.05; p < 0.001). Female sex, early onset, and African ethnicity were associated with an increased risk of metabolic syndrome. Furthermore, patients with androgenetic alopecia had significantly poorer metabolic profiles, such as body mass index, waist circumference, fasting glucose, blood lipids, and blood pressure. It is important for physicians to screen metabolism-related indicators in patients with andro-genetic alopecia. More rigorously designed studies and larger sample sizes are required in future studies.