The first 7 studies in the list demonstrate causation, as participants eliminated porn use and healed chronic sexual dysfunctions. Recent research on brain changes in response to “highly palatable foods” is revealing evidence of an addiction process How internet porn affects the brain is a video made by your brain on porn
Your Brain On Porn: Internet Pornography and the Emerging Science of Addiction: Gary Wilson
It shows the state of research into the impact of porn on the brain
1, 2, 3, 4, 5, 6, 7, 8
Below this article there are over 1,000 short recovery stories and “rebooting benefits.” In addition to brain studies on porn users/sex addicts, multiple studies reveal a link between porn use and sexual performance problems, relationship and sexual dissatisfaction, and reduced brain activation to sexual stimuli (see this continuously updated list of studies).