What is the SUD biopsychosocial model?

Biological factors (genetics [fam hx], brain chemistry [altered reward system, neurotransmitters, dependency], mental health disorders [co-occurring mental health disorders, depression, anxiety]) Psychological (self-medication hypothesis [high level of stress, coping mechanism], trauma [early trauma], personality traits [impulsive, excitement]) Social factors (peer pressure [adolescence], family environment [lack of supervision, hx of use], socioeconomic status [poverty, lack of access to education, unemployment])