One major cause of drug abuse is stress and mental health issues. People experiencing anxiety, depression, or other psychological problems may turn to drugs as a way to cope with their struggles. According to a report by the World Health Organization, 80% of working adults with poor mental health, such as anxiety and depression, are more likely to engage in drug abuse. Another contributing factor is peer pressure, especially among teenagers. Young people often experiment with drugs to fit in with their social groups, which can lead to addiction. For instance, the U.S. School Development Institute found that one of the top reasons for new drug users is being influenced by friends.