Behavioral Health
The stress of experiencing homelessness can amplify previous mental illness and trigger anxiety, depression, fear, substance use, and sleeplessness.
UCSF BHHI behavioral health research focuses on people’s access to permanent housing, mental health services, shelters, and substance abuse support to prevent and end homelessness in the United States.
Related Resources
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Reports
Behavioral Health and Homelessness
March 19, 2025
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Behavioral health challenges both contribute to and are exacerbated by homelessness. To better understand behavioral health and homelessness, we examined data from the California Statewide Study of People Experiencing Homelessness. Our latest report examines the relationship between homelessness, substance use, and mental health, providing critical insights for policymakers, program leaders, Continuum of Care leaders, and healthcare systems.
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Press Release
New UCSF BHHI Report Examines the Relationship Between Homelessness and Drug Use
March 19, 2025
Press Release
New UCSF BHHI Report Examines the Relationship Between Homelessness and Drug Use
March 19, 2025
The University of California, San Francisco Benioff Homelessness and Housing Initiative (BHHI) today released a report that examines the issues of homelessness and behavioral health (substance use and mental health) and makes recommendations for policymakers and practitioners.
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News
Study Finds Just 37% of California Homeless People Are Regular Drug Users
Mercury News
March 10, 2025
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News
Study Finds Just 37% of California Homeless People Are Regular Drug Users
Mercury News
March 10, 2025
A new UCSF BHHI study challenges common perceptions about homelessness and drug use in California, revealing that only 37% of surveyed unhoused Californians use drugs regularly, while 25% have never used them at all. Methamphetamine, not opioids, is the most commonly used drug, often as a means to stay alert while living on the streets. The study also highlights the complex relationship between addiction and homelessness—while drug use can increase the risk of losing housing, “Homelessness itself increases drug use because people use it as a coping strategy,” said Margot Kushel, MD. With homelessness on the rise and only 7% of respondents in treatment, experts stress that expanding affordable housing and accessible treatment options is crucial to addressing both crises.
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News
Study Shows Majority of Homeless People in CA Are Not Illegal Drug Users
KCBS Radio
February 28, 2025
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News
Study Shows Majority of Homeless People in CA Are Not Illegal Drug Users
KCBS Radio
February 28, 2025
Research from UCSF Benioff Homelessness and Housing Initiative reveals that most people experiencing homelessness in California are not illegal drug users—contrary to widespread public perception. These findings challenge common stereotypes and underscore the urgent need for better treatment options and housing solutions across the state. KCBS Radio news anchor Eric Thomas spoke with Margot Kushel, MD, Professor of Medicine and Chief of UCSF’s Division for Health Equity and Society, to dive deeper into the issue.
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