Their has been a study that shows why each age group runs away.... in-between 12-17 are more at risk of homeless then adults. 75% are female runaways; and an estimate of the number pregnant homeless are in-between 6% and 22%. And in-between 20% and 40% of homeless: are gay lesbian, bisexual, transgender, or questioning.
Some of the effects of homeless is...... difficulty attending school due to the lack of required enrollment records; of immunization, medical records, and proof of residence, as well as lack of transportation.
The national concurrence of state legislature says, "forty percent of Africa American youth and 36 percent of Caucasian youth homeless who experience homelessness or life on the streets sold drugs, primarily marijuana, for money". (The National Concurrence of State Legislature)
Most but not all homeless sell drugs to get shelter, food, clothes, and just to meet basic needs of life.
Some of the states have adopted a variety of policies to combat youth while others give money for shelter and transitional housing, some also include counseling and outstretched service to those that are homeless and those in risk if becoming homeless.