http://www.psychologytoday.com/blog/.../effects-porn-
adolescent-boys
Between the ages of 12 and 20, the human brain undergoes a period of great
neuroplasticity. The brain is in a malleable phase during which billions of new synaptic
connections are made. This leaves us vulnerable to the influence of our surroundings
and leads our brains to be "wired" around the experiences and information that we
receive during that time period.
When an adolescent boy compulsively views pornography, his brain chemistry can
become shaped around the attitudes and situations that he is watching. Sadly,
pornography paints an unrealistic picture of sexuality and relationships that can create
an expectation for real-life experiences that will never be fulfilled.