Which of the following is an indicator of heroin use?

Loss of appetite is an indicator of heroin use because the substance affects the body's natural hunger signals and significantly alters metabolic functions. When someone is using heroin, they may experience a decrease in interest in food and eating, as the drug can suppress the central nervous system. This reduction in appetite can lead to noticeable weight loss and other health issues over time if the drug use continues. Understanding this symptom is crucial for those working in correctional or probation settings, as recognizing signs of drug use can lead to appropriate interventions and support for individuals struggling with addiction. Other symptoms associated with heroin use may include physical health issues, behavioral changes, and psychological effects, but the loss of appetite specifically connects to the drug's pharmacological impact on the body.