An estimated 7.7 million children in the United States (16.5%) have at least one mental health disorder. Approximately half (49.4%) did not receive treatment from a mental health professional. These findings were reported in "U.S. National and State-Level Prevalence of Mental Health Disorders and Disparities of Mental Health Care Use in Children" by Daniel G. Whitney, Ph.D.; and Mark D. Peterson, Ph.D. The researchers analyzed data from the 2016 National Survey of Children's Health, a nationally representative survey of children younger than 18 years, as answered by participating parents or guardians. The . . .