During the last few years, the time spent in front of various screens, including TV sets, video games, smartphones and computers, has dramatically increased. Numerous studies show, with a remarkable consistency, that this trend has a strong negative influence on the cognitive development of children and teenagers. The affected fields include, in particular, scholastic achievement, language, attention, sleep and aggression. We believe that this often disregarded - not to say denied - problem should now be considered a major public health issue. Primary care physicians should inform parents and children about this issue to support efficient prevention.
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