Recent research shows the causes of erectile dysfunction (ED) are far more complex than previously thought. High blood pressure, heart disease, diabetes and other physical conditions contribute to ED in ways we're only beginning to understand.
Of course, the body and mind work together to achieve erections and incite a sexual response. If you doubt that, think about all the times you've heard the old tip that claims "thinking about baseball" can delay ejaculation. There's a kernel of truth in there.
And as physical conditions and their effects on ED become better understood, researchers are broadening our understanding of the psychological conditions that can exacerbate the problem.