Individual
Lack of knowledge about the risks
Poor ability to regulate and deal with strong emotions
Untreated mental health issues: mood disorders like depression, bi-polar, disruptive mood dysregulation, anxiety disorders including social anxiety, panic attacks, Schizophrenia, PTSD
Learning disabilities, ADHD
Poor self-esteem, shame
Low assertiveness
Poor behavioral self-control
Genetics
Personality traits like impulsivity, high levels of sensation seeking
Conduct disorder: aggressive, violent, destructive, and deceptive behavior, violation of the rules
Same gender attraction, transgender, bisexual
Isolation
Early onset of harmful substance use
Poor interpersonal relationships
Physical or emotional trauma
Adverse Childhood Experiences
Grief or loss
Chronic health problems