In this episode of The Psychology Undergrad, we examine why increasing numbers of physically healthy teens and young men report erectile dysfunction despite normal testosterone levels and no underlying medical conditions. Drawing on neuroscience, developmental psychology, and recent research on porn-induced erectile dysfunction (PIED), we explain how dopamine down-regulation, super-normal digital stimuli, and adolescent brain development reshape sexual arousal. This is not a moral argument—it’s a public-health and brain-science explanation of what’s happening beneath the surface.

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