As a mental health professional seeing the mental health crisis in youth first hand, and as a tail end millennial who was just finishing high school when the smartphones and social media were becoming available 24/7, this book explains everything. And frankly, the stats are alarming on what constant phone and social media use does to youth in particular. Everyone needs to read this, for their own health, for the benefit of youth, and our future children. It forced me to take a long look at my use of social media and phones as well, despite being an adult, and it has improved my life as well.