Adolescent substance abuse is the nation's #1 public health problem. It originates out of a developmental era where experimentation with the world is increasingly taking place, and where major changes in physical self and social relationships are taking place. These changes cannot be understood by any one discipline nor can they be described by focusing only on the behavioral and social problems of this age period, the characteristics of normal development, or the pharmacology and addictive potential of specific drugs. They require knowledge of the brain's systems of reward and control, genetics, psychopharmacology, personality, child development, psychopathology, family dynamics, peer group relationships, culture, social policy, and more. Drawing on the expertise of the leading researchers in this field, this Handbook provides the most comprehensive summarization of current knowledge about adolescent substance abuse. The Handbook is organized into eight sections covering the literature on the developmental context of this life period, the epidemiology of adolescent use and abuse, similarities and differences in use, addictive potential, and consequences of use for different drugs; etiology and course as characterized at different levels of mechanistic analysis ranging from the genetic and neural to the behavioural and social. Two sections cover the clinical ramifications of abuse, and prevention and intervention strategies to most effectively deal with these problems. The Handbook's last section addresses the role of social policy in framing the problem, in addressing it, and explores its potential role in alleviating it.

Significant changes have taken place in the policy landscape surrounding cannabis legalization, production, and use. During the past 20 years, 25 states and the District of Columbia have legalized cannabis and/or cannabidiol (a component of cannabis) for medical conditions or retail sales at the state level and 4 states have legalized both the medical and recreational use of cannabis. These landmark changes in policy have impacted cannabis use patterns and perceived levels of risk. However, despite this changing landscape, evidence regarding the short- and long-term health effects of cannabis use remains elusive. While a myriad of studies have examined cannabis use in all its various forms, often these research conclusions are not appropriately synthesized, translated for, or communicated to policy makers, health care providers, state health officials, or other stakeholders who have been charged with influencing and enacting policies, procedures, and laws related to cannabis use. Unlike other controlled substances such as alcohol or tobacco, no accepted standards for safe use or appropriate dose are available to help guide individuals as they make choices regarding the issues of if, when, where, and how to use cannabis safely and, in regard to therapeutic uses, effectively. Shifting public sentiment, conflicting and impeded scientific research, and legislative battles have fueled the debate about what, if any, harms or benefits can be attributed to the use of cannabis or its derivatives, and this lack of aggregated knowledge has broad public health implications. The Health Effects of Cannabis and Cannabinoids provides a comprehensive review of scientific evidence related to the health effects and potential therapeutic benefits of cannabis. This report provides a research agendaâ€"outlining gaps in current knowledge and opportunities for providing additional insight into these issuesâ€"that summarizes and prioritizes pressing research needs.

An enlightening discussion of the major issues related to the prevention and treatment of adolescent substance abuse. Information-packed chapters lend a new perspective to the field and suggest implications for practice in services for youth.