Our Research

In this cohort study, UCSF BHHI researchers found that most older homeless-experienced adults needed caregiving assistance and few received such assistance. Interventions that increase caregiving access for homeless-experienced individuals may help avoid poor health outcomes and costly long-term care needs due to untreated disabilities.

High users of the health care system use a disproportionate amount of health services yet have poorer health outcomes. This study aimed to examine natural trends in emergency department visits among high users of health and social services and assess whether the trends differed during the COVID-19 pandemic. In this retrospective cohort study, researchers found that there was a decrease in emergency department visits. Further research is needed to elucidate COVID-19 pandemic specific factors associated with a decrease in emergency department visits.

People living with HIV experiencing homelessness are more likely to have higher viral loads. The POP-UP model at the Ward 86 HIV clinic in San Francisco was designed to address barriers to care engagement. Researchers found an improvement in the 12-month HIV viral suppression from 0% to 44%. However, many patients were not virally suppressed. Researchers suggest that POP-UP clinics are promising to improve care engagement and HIV viral suppression among people experiencing homelessness.

In this long-term study of 450 homeless adults age 50 and older, BHHI researchers examined how factors like regaining housing, using drugs, and having various chronic conditions, such as diabetes, affected participants' risk of dying. They found that 26% of the participants died within a few years of being enrolled, and people who first became homeless at age 50 or older were about 60% more likely to die than those who had become homeless earlier in life, and those who remained homeless were about 80% more likely to die than those who were able to return to housing. These findings illustrate an urgent need for policy approaches to prevent and end homelessness among older adults in the United States and suggest that addressing older adults’ barriers to health care and high rates of institutionalization may prevent premature mortality.

Patients who experience homelessness face a high burden on chronic disease, including colorectal cancer. There are many barriers in access to colonoscopy procedures. Researchers provide policy solutions to reduce health care disparity.

People living with HIV/AIDS (PLWHA) have an increased risk of experiencing homelessness. The underlying drivers of homelessness are structural, however individual factors such as mental health and substance use problems are also common drivers. People living with HIV/AIDS who experience homelessness are more likely to have uncontrolled viral load. Researchers from BHHI suggest integrating HIV treatment with mental health and substance use treatment.

Housing status is a significant upstream determinant of access to healthcare. In this literature review, researchers identified areas of concern unique to patients experiencing homelessness with surgical disease. Researchers found that there was a gap in the surgical literature with regards to the impact of housing status on optimal surgical care. More studies are needed to accurately characterize the surgical care of patients experiencing homelessness and identify areas for care improvement.

Managed alcohol program (MAPs) manage alcohol consumption by providing eligible individuals with regular doses of alcohol as a part of a structured program and often offer housing and other social services. UCSF BHHI researchers found that benefits of MAPs included improved quality of life, reduced alcohol consumption, less hazardous consumption, and potential stabilizations in biological markers of alcohol use during MAP participation. Researchers found MAP participants reported substantial benefits, including increased feelings of safety and security, reconnection with community, sense of belonging, improved self-efficacy, and a positive reconciliation of internalized shame and stigma.

The homeless population in the United States is aging, however, there is limited studies on the neurologic etiologies of cognitive impairment in this population. Researchers observed a wide range of focal neurological deficits in the study participants, most notably deficits in cranial nerve function, motor function, coordination, and peripheral sensory functions. This study lays the foundation for the development of a longitudinal study of neurocognitive health among unhoused older adults in San Francisco.

People experiencing homelessness (PEH) have a high rate of tobacco use. Researchers examined factors associated with cigarette consumption and quit attempts. They found having an encounter with staff in the past week was associated with a 40% reduction in weekly consumption. The findings highlight the role of community-based pharmacists to expand smoking cessation services in homeless shelters.

People living with HIV (PLH) experiencing homelessness or unstable housing have lower rates of viral suppression compared to people who are housed. In 2020, only 20% of PLH experiencing homelessness in San Francisco were virally suppressed, compared to 71% of those who were housed. Researchers examined case preferences among PLH experiencing homelessness during the COVID-19 pandemic in San Francisco. They found that the strongest preference were for the same provider, visit incentives, and drop-in visits.