Manufacturing Contamination. 1  20% group: Decreased weight gain, reduced liver weight, increased amount of iron, kidney stones and nephrocalcinosis (a condition where too much calcium is deposited in the kidneys, which has been linked to premature babies). 2  10% group: Reduced liver weight.
Parents should limit kidsâ screen time to 2 hours a day: American Academy of Pediatrics. Mark Risinger, 16, checks his smartphone at home in Glenview, Ill. The American Academy of Pediatrics updated its recommendations for teens and technology on Monday, suggesting parents limit kidsâ screen time to no more than two hours a day.
Children aged between three and seven should be limited to half-an-hour to an hour of screen time each day, he said. Those aged seven to 12 should spend just one hour in front of screens. Children aged 12 to 15 should have a maximum of 1.5 hours in front of screens and those aged 16 and over should spend just two hours, he recommends. ''Reducing total daily screen time for children, and delaying the age at which they start, could provide significant advantages for their health and wellbeing,'' he writes.