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Updated: Jun 12, 2026

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Prolactin levels independently predict major cardiovascular events in patients with erectile dysfunction
G Corona1, G Rastrelli, V Boddi
1Andrology Unit and Endocrinology, Department of Clinical Physiopathology, University of Florence, Florence, Italy.
Higher prolactin (PRL) levels in men with erectile dysfunction (ED) are linked to a lower incidence of major cardiovascular events (MACE). This finding suggests a protective role for PRL in cardiovascular health for at-risk populations.
Area of Science:
- Endocrinology
- Cardiology
- Men's Health
Background:
- The physiological role of prolactin (PRL) in men remains unclear.
- Previous research linked lower PRL to adverse metabolic profiles and erectile dysfunction (ED).
Purpose of the Study:
- To investigate the association between PRL levels and incident major cardiovascular events (MACE) in men with ED.
Main Methods:
- Analysis of PRL levels and MACE incidence in subjects with ED, excluding pathological hyperprolactinemia and pituitary diseases.
- Statistical analysis to determine the risk of MACE based on PRL levels, including quintile and incremental analyses.
Main Results:
- Subjects in the highest PRL quintile (12-35 ng/mL) showed a significantly lower incidence of MACE compared to others.
- Each 10 ng/mL increase in PRL was associated with a 5% reduction in MACE risk (p=0.03).
- No significant MACE difference was observed when comparing hyperprolactinemia patients with controls.
Conclusions:
- Elevated PRL plasma levels are associated with a reduced risk of MACE in men with ED, independent of other cardiovascular risk factors.
- This suggests a potential protective cardiovascular role for PRL in men experiencing ED.
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