A drug is a chemical that interacts with other substances to alter or change something. In the United States, drugs are a major part of everyday life. Whenever you have a cup of coffee, drink tea, or flavor something with condiments such as sugar or salt, you are using drugs. In some instances they may be used for positive effects ( aspirin or prescription pain killers in moderation to cure a headache or other sickness). However, sometimes people abuse drugs (alcohol or painkillers) or make use of illegal ones (marijuana, cocaine, ecstasy, LSD, mushrooms, heroin, etc). This negative use of drugs poses a great threat in American society. If you have eve