After adolescents, a person enters adulthood, which is marked by a certain level of physical maturity and mental, biological, and cultural characteristics associated with growing older. There are different categories of adulthood based on age.
Transitioning to an adult can be challenging and may lead to negative behaviors (e.g., substance abuse) for some individuals. These behaviors can lead to depression (especially if there are underlying mental health issues). Professional help through therapy and other treatments is recommended for those facing a difficult transition