Watching too much television can have negative physiological and psychological effects. Physiologically, excessive TV viewing can strain the eyes and contribute to obesity from snacking. Psychologically, prolonged exposure to violent content on TV can desensitize people and cause them to view such acts as normal. Additionally, TV can replace interpersonal communication and relationships, leading to increased loneliness and potentially higher rates of divorce. Moderation in TV viewing is important to avoid or reduce these adverse physiological and psychological effects.