One detail I’ve found fascinating is that thyroid hormones influence endothelial nitric oxide synthase, so low thyroid levels can directly reduce nitric oxide availability, which is crucial for erections. Also, hypothyroidism can cause a rise in prolactin, which further suppresses libido and erectile function. As for stats, some studies report ED in up to 60% of men with untreated hypothyroidism, and many see improvement after thyroid hormone replacement. It’s wild how managing a “simple” hormone imbalance can make such a huge difference!