Yes, Does Dehydration Cause ED potentially contribute to erectile dysfunction (ED). When the body is dehydrated, it can lead to reduced blood volume and circulation, which are essential for achieving and maintaining an erection. Additionally, dehydration can affect overall energy levels and mood, which can further impact sexual performance. Staying well-hydrated is important for overall health, including sexual function. If you’re experiencing persistent issues, it’s a good idea to consult a healthcare professional.