There are many negative side effects of watching p0rn, but there are three that can be especially damaging: 1. Too much dopamine: This causes your brain to become linked to the screen. Since dopamine is making p0rn feel so good, it keeps you going back for more and more. Eventually, the real world won't provide enough dopamine to satisfy you. 2. Mood disorders: P0rn addiction can cause anxiety, depression, fatigue, and irritability. 3. Ed: Too much p0rn consumption can eventually lead to arousal