What concept refers to the need for increased amounts of a substance to achieve the same effects?

The concept that refers to the need for increased amounts of a substance to achieve the same effects is tolerance. Tolerance occurs when an individual’s body adapts to a substance over time, leading to a diminished response to its usual amount. As a result, the individual often finds themselves needing to consume higher doses to experience the effects they initially achieved with lower quantities.

Understanding tolerance is vital in the context of substance use and addiction, as it can indicate an escalation in substance use behaviors and potentially contribute to more serious addiction issues. The development of tolerance can also influence treatment approaches, as it may necessitate adjustments in therapeutic strategies and support systems for individuals struggling with substance use disorders.