Melatonin Fights Rise of Occasional Teen Anxiety  Do you think teenagers are becoming increasingly anxious?  Teenagers between 13 and 18 have seen a sharp 20% rise in occasional anxiety between 2007 and 2012.12 The National Institutes of Health found one in three adolescents experience occasional anxiety.2  Today, adolescents are digital natives. They have grown up with screens, leading many researchers to believe the rise in stress level is linked to excessive screen time. In America,