Abstract
Purpose
The clinical significance of metabolic syndrome (MetS) versus its single components in erectile dysfunction (ED) is conflicting. Thus, the purpose is to analyze the available evidence on the relationship between MetS—along with its components—and ED.
Methods
All prospective and retrospective observational studies reporting information on ED and MetS were included. In addition, we here reanalyzed preclinical and clinical data obtained from a previously published animal model of MetS and from a consecutive series of more than 2697 men (mean age: 52.7 ± 12), respectively.
Results
Data derived from this meta-analysis showed that MetS was associated with an up to fourfold increased risk of ED when either unadjusted or adjusted data were considered. Meta-regression analysis, performed using unadjusted statistics, showed that the MetS-related risk of ED was closely associated with all the MetS components. These associations were confirmed when unadjusted analyses from clinical models were considered. However, fully adjusted data showed that MetS-associated ED was more often due to morbidities included (or not) in the algorithm than to the MetS diagnostic category itself. MetS is also associated with low testosterone, but its contribution to MetS-associated ED—as derived from preclinical and clinical models—although independent, is marginal.
Conclusions
The results of our analysis suggest that MetS is a useless diagnostic category for studying ED. However, treating the individual MetS components is important, because they play a pivotal role in determining ED.
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Data availability
The datasets generated during and/or analysed during the current study are available from the corresponding author on reasonable request.
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All authors contributed to the study conception and design. Material preparation, data collection, and analysis were performed by GC and MM. The first draft of the manuscript was written by GC and MM, and all authors commented on previous versions of the manuscript. All authors read and approved the final manuscript.
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Corona, D.G., Vena, W., Pizzocaro, A. et al. Metabolic syndrome and erectile dysfunction: a systematic review and meta-analysis study. J Endocrinol Invest 46, 2195–2211 (2023). https://doi.org/10.1007/s40618-023-02136-x
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DOI: https://doi.org/10.1007/s40618-023-02136-x