What is the condition where the body requires a drug to function normally?

The condition where the body requires a drug to function normally is known as dependency. When an individual develops dependency on a drug, their body has adapted to the presence of the substance, leading to a state in which the absence of that drug can result in physical or psychological distress. This concept is crucial in understanding how addiction or long-term drug use affects the body and mind, as dependency signifies that the substance has become integrated into the physiological processes of the individual.

Dependency often involves tolerance as well, where higher doses of the drug are needed to achieve the same effects. Recognizing dependency is vital in the workplace context, as it can significantly impact an employee's performance and safety, necessitating appropriate interventions. Understanding this term helps highlight the seriousness of substance use issues and is fundamental for anyone working in environments where impairment may occur.