What is meant by physical dependence?

Physical dependence refers specifically to a condition where the body has adapted to the presence of a substance, resulting in a need for that substance to maintain normal physiological functioning. When a person is physically dependent, their body may experience withdrawal symptoms when the substance is not available, indicating that the substance has become integral to their body's functioning.

This concept is often associated with substances like alcohol, opioids, or other drugs, where the body becomes accustomed to their effects, and cessation can lead to various physical symptoms. This physiological reliance distinguishes physical dependence from psychological or emotional dependence, which is more focused on the mental processes surrounding cravings or support systems.

The other options reflect different concepts, such as environmental influence on health, dietary preferences, or psychological support, which do not accurately capture the essence of physical dependence as it relates to substance usage.