Mary Anne Layden, co-director of the Sexual Trauma and Psychopathology Program at the University of Pennsylvania's Center for Cognitive Therapy, called porn the \"most concerning thing to psychological health that I know of existing today.\"

\"The internet is a perfect drug delivery system because you are anonymous, aroused and have role models for these behaviors,\" Layden said. \"To have drug pumped into your house 24/7, free, and children know how to use it better than grown-ups know how to use it -- it's a perfect delivery system if we want to have a whole generation of young addicts who will never have the drug out of their mind.\"
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Jeffrey Satinover, a psychiatrist and advisor to the National Association for Research and Therapy of Homosexuality echoed Layden's concern about the internet and the somatic effects of pornography.

\"Pornography really does, unlike other addictions, biologically cause direct release of the most perfect addictive substance,\" Satinover said. \"That is, it causes masturbation, which causes release of the naturally occurring opioids. It does what heroin can't do, in effect.\"

The internet is dangerous because it removes the inefficiency in the delivery of pornography, making porn much more ubiquitous than in the days when guys in trench coats would sell nudie postcards, Satinover said.
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Judith Reisman of the California Protective Parents Association suggested that more study of \"erototoxins\" could show how pornography is not speech-protected under the First Amendment.