Each year, about 1% to 6% of children and teenagers develop major
depression. This mood disorder not only interferes with school
achievement and relationships, but also increases the risk of
suicide (the third leading cause of death in adolescents). Early
onset of depression also raises the risk of developing more severe
and chronic symptoms later in life.
Several reviews have concluded that interventions to prevent or
delay depression are modestly effective, at least in the short
term. More recent research suggests that these programs are most
effective when offered to those youths most likely to develop
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