Mental health
Children and young adults

As of 2019, about one in seven of the world's 10–19 year olds experienced a mental health disorder; about 165 million young people in total. A person's teenage years are a unique period where much crucial psychological development occurs, and is also a time of increased vulnerability to the development of adverse mental health conditions. More than half of mental health conditions start before a child reaches 20 years of age, with onset occurring in adolescence much more frequently than it does in early childhood or adulthood. Many such cases go undetected and untreated.

In the United States alone, in 2021, at least roughly 17.5% of the population (ages 18 and older) were recorded as having a mental illness. The comparison between reports and statistics of mental health issues in newer generations (18–25 years old to 26–49 years old) and the older generation (50 years or older) signifies an increase in mental health issues as only 15% of the older generation reported a mental health issue whereas the newer generations reported 33.7% (18-25) and 28.1% (26-49). The role of caregivers for youth with mental health needs is valuable, and caregivers benefit most when they have sufficient psychoeducation and peer support. Depression is one of the leading causes of illness and disability among adolescents. Suicide is the fourth leading cause of death in 15-19-year-olds. Exposure to childhood trauma can cause mental health disorders and poor academic achievement. Ignoring mental health conditions in adolescents can impact adulthood. 50% of preschool children show a natural reduction in behavioral problems. The remaining experience long-term consequences. It impairs physical and mental health and limits opportunities to live fulfilling lives. A result of depression during adolescence and adulthood may be substance abuse. The average age of onset is between 11 and 14 years for depressive disorders. Only approximately 25% of children with behavioral problems refer to medical services. The majority of children go untreated.
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