The UK's top doctors warn families about social media and screen use, advising screen-free meal times and more, joining a growing chorus advising caution (Palko Karasz/New York Times)

Palko Karasz / New York Times:
The UK's top doctors warn families about social media and screen use, advising screen-free meal times and more, joining a growing chorus advising caution  —  LONDON — With even Silicon Valley worrying about the effect of technology exposure on young people, Britain's top doctors …