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Substance Use Disorder Headlines

Explore the latest public health research and insights about substance use disorder.

Narcan, the naloxone nasal spray used to reverse opioid overdose, was just FDA-approved for over-the-counter sale—a major victory for harm reduction advocates and public health. 

Substance Use Disorder Faculty Experts

Looking for prominent public health experts in the field of substance use disorder? They’re here at the Bloomberg School of Public Health.


Caleb Alexander

G. Caleb Alexander, MD, MS, is a practicing internist and epidemiologist focused on maximizing the use, safety, and effectiveness of prescription medicines.

Susan Sherman
Health, Behavior and Society

Susan Sherman, PhD '00, MPH, brings harm reduction evidence to inform drug policy and programming in order to reduce overdose deaths and other harms to people who use drugs.

Sean Allen
Assistant Professor
Health, Behavior and Society

Sean Allen, DrPH, MPH, uses research to inform drug policies and eliminate health disparities among people who inject drugs.

Elizabeth Stuart

Elizabeth Stuart, PhD, uses statistical methods to help learn about the effects of public health programs and policies, often with a focus on mental health and substance use.

Haneefa Saleem
Assistant Professor
International Health

Haneefa Tasleem Saleem, PhD ’14, MPH, ’09, conducts research to inform and evaluate approaches aimed at improving HIV prevention and treatment and other health outcomes for people who use drugs globally.

Melissa Walls
Associate Professor
International Health

Melissa Walls, PhD, MA, is an Indigenous researcher who works with American Indian and First Nations communities to promote health equity through culturally centered projects.