• Your biology. Everyone's bodies react to drugs differently. Some people like the feeling the first time they try a drug and want more. Other people hate how it feels and never try it again. Some are more likely to get addicted.
  • Starting drug use when you're young. When kids use drugs, it can change how their bodies and brains finish growing. Using drugs when you're young increases your chances of becoming addicted when you get older.
  • Mental health problems. People who have mental health problems such as depression, trouble paying attention, changing moods, or worrying about things, are more likely to become addicted. They might use drugs to try to feel better. Read more at the Easy-to-Read Drug Facts webpage, Drug Use and Mental Health Problems Often Happen Together.
  • Hanging around other people who use drugs. Friends or family members who use drugs may make you more likely to use drugs.
  • Trouble in school, trouble at work, trouble with making friends. Trouble at school or work, or trouble getting along with people, can make life hard. You might use drugs to get your mind off these problems or use drugs to make friends. But true friends wouldn't ask you to take that risk.