Started skimming this, but quickly grew tired of not seeing firm data. Did a search for "withdrawal" and found no matches.

My kids watch about 20 minutes of carefully selected video content a day. It helps wind them down before dinner and gives my wife and I a moment to breathe, so I'm not in the "pure poison" camp.

But does that mean it's harmless in any quantity? I'm have no interest in assuming so, and finding out where screen addiction begins, and then trying to walk it back.