Established / Validated
Both High and Low Testosterone Tied to Higher Atrial Fibrillation Risk
A narrative review published in the Journal of the Endocrine Society suggests a U-shaped relationship between testosterone levels and the risk of atrial fibrillation in men. The findings indicate that both low testosterone and high testosterone levels, including those resulting from replacement therapy, are associated with increased heart rhythm risks.
jamanetwork.com
Last reviewed Sep 26, 2026
