The terms “addiction” and “dependence” can seem similar, but they are different. Dependence occurs when the body physically relies on a drug. Addiction involves changes in behavior. A person with an ...

My previous posts have focused on recognizing and preventing excessive substance use, with an emphasis on providing the latest information about my special interest – cannabis (see 20 Questions to ...

Nosology—the classification of disease and illness—groups medical conditions according to organizing principles. This provides healthcare professionals and systems a common language for diagnosis and ...

This article was published in Scientific American’s former blog network and reflects the views of the author, not necessarily those of Scientific American Over the past year and a half, Scientific ...