Drug Epidemiology as a Critical Subject of Global Health, Mental Health, and Health Equity: Advances, Trends, and Contemporary Issues.

Drug epidemiology basically involves the methodical study of the incidence, distribution, and impact of drug or substance abuse in populations and associated factors with a view to proffering solutions or interventions. Drug epidemiology has significantly evolved over the years. The nature of substances that are being used or abused has also drastically evolved, just as the factors that are associated are also evolving. Populations appear to have observable trends or patterns and characteristic underlying factors that are primarily responsible for the trends. Unfortunately, there have not been adequate efforts to appreciate the evolutions that have characterized the patterns of drug or substance abuse or the factors that are responsible for these trends. This is also because drug epidemiology has arguably not been given the attention that it probably deserves worldwide. Judging by recent developments and data on prevalence, drug epidemiology warrants significant attention. This article provides insights into drug epidemiology, not just as a concept but a subject of public and global health, and health equity. It also highlights challenges and matters arising in drug epidemiology, sheds light on contemporary issues, and attempts to suggest solutions. Finally, it advocates for policies and practices that are in line with global realities and trends.