Radiation and artificial light Early research on radiation has led to a substantial reduction in the amount of X-rays being emitted. Obesity Elevated cholesterol and obesity are two of the most prevalent nutritional diseases among U.S. children today. TV viewing has been found to be associated with both of these conditions. Likewise, viewing correlates significantly with between-meal snacking, consumption of advertised foods, and attempts to influence mothers' food purchases. Teachers comment that children are too tired and irritable to work well after late night viewing.
Sleep is a physical necessity, required to build up the growing organism.
It is also a psychological necessity, the prerequisite for dreaming. Yet dreams after TV viewing may be disturbed, with vivid TV images resurfacing and causing nightmares. Effects on cognitive and intellectual development Numerous child development and educational experts express great concern with television's numbing effect on children's brains. Many reports suggest that our children's minds are not developing the way they should, and this is attributed in large measure to excessive TV viewing. In the early years, when the brain is so malleable and sensitive, TV viewing prolongs the dominance of right brain functions which induce a trance-like state.