Definition of addiction?

Andrew Huberman defines addiction as a progressive narrowing of the things that bring you pleasure. Initially, an activity or substance may provide pleasure, but over time, the range of activities or substances that can give you pleasure diminishes. This narrowing can severely impact various aspects of life, such as relationships and professional stability, showing the detrimental effects of addiction on one's baseline quality of life. Essentially, addiction shifts pleasure responses, making life increasingly dependent on the addictive substance or activity 1.