It's not addiction in the sense that heroine or gambling are addictions. The brains of people who struggle with too much porn consumption do not react in an addictive pattern. For someone who has a gambling problem, their brain will be sensitive to the action and will show excitement. For someone viewing porn though, their brain is not sensitized to and their brain reaction will actually decrease.

There's no question that some people struggle to control their porn viewing however, labeling it addiction and treating it as such is patently wrong. Such uncontrollable viewing needs to be handled with different treatment and needs to be handled as a separate issue from addiction.

Porn 'Addiction' Isn't Really Addiction, Neuroscientists Say

Modulation of late positive potentials by sexual images in problem users and controls inconsistent with ?porn addiction?