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The University of California, San Francisco Benioff Homelessness and Housing Initiative (BHHI) today released a report on the relationship between health and homelessness. Toward Thriving: Understanding Health & Homelessness reveals that nearly half of Californians experiencing homelessness rate their health as poor or fair—about four times the rate in the general U.S. population. The report documents high rates of chronic disease, disability, and steep barriers to care for Californians experiencing homelessness.

People experiencing homelessness have lower rates of cancer screening than housed people, contributing to later stages of cancer diagnosis and poor outcomes. We examined whether gaining housing increased rates of cancer screening in a cohort of homeless veterans. This study of nearly 120,000 homeless veterans finds that gaining housing was linked to higher screening rates for both breast and colorectal cancer—key to detecting cancer earlier, reducing the need for emergency surgery, and saving lives.

Globally, tobacco use causes 8.7 million deaths annually. Approximately 50 % of formerly homeless adults in permanent supportive housing (PSH) in the United States smoke cigarettes. Secondhand smoke exposure is high in the absence of smoke-free policies. There is a need to understand attitudes toward smoke-free policies and factors associated with smoke-free home adoption attempts among PSH residents.

People experiencing homelessness have significantly lower life expectancies than the general population, and among those aged ≥ 45, tobacco-related illnesses are the leading cause of death.[1] Compared to the general population, tobacco use among people experiencing homelessness is six times higher, and the quit ratio (ratio of former to ever-smokers) is five times lower. [2],[3] We used the largest representative study of people experiencing homelessness since the 1990s to estimate tobacco use prevalence and its association with shelter status, behavioral health, and health services use among adults experiencing homelessness in California to identify opportunities to address unmet tobacco treatment needs.

Californians experiencing homelessness have poor health, struggle to access care, and face high ER and hospitalization rates—despite high rates of insurance. In this cross-sectional, representative study of adults experiencing homelessness in California, we found poor access to health care and high rates of short-term health care utilization that reflected how homelessness is negatively associated with health care access. Predisposing contextual and need factors, including being unsheltered, using illicit drugs, and having functional impairments, were associated with reduced access to care and increased use of short-term care. These findings underscore the necessity for health care and housing interventions that are tailored to the needs of people experiencing homelessness.

Homelessness is detrimental to health, and clinicians can play an essential role in mitigating the deleterious effects of homelessness. Margot Kushel, MD, director of the UCSF Benioff Homelessness and Housing Initiative, discusses this and more with JAMA Senior Editor Karen E. Lasser, MD, MPH. Dr. Kushel said, "When you are an individual provider, in a room, you are trying to understand the difficult environmental conditions that your patient has and do things to decrease that part."

People experiencing homelessness have worse mental and physical health than the general population. They also have limited access to primary care for reasons including the absence of health insurance, lack of money for co-payments or transportation, and communication barriers. In this JAMA Insights, researchers examine the adverse effects of homelessness on physical and mental health and suggest strategies to improve access to care.

Unhoused patients have worse surgical outcomes than the general population, resulting in premature mortality. Researchers conducted 26 semi-structured interviews of clinicians who care for patients with surgical disease. The researchers identified 5 themes, including, but not limited to: patients and clinicians face multiple challenges meeting preoperative requirements; although surgeons do not make major operative decisions based on housing status, some take it into consideration for minor care decisions; clinicians perceive that unhoused patients have negative postoperative experiences in the hospital.

In a cohort of over 100,000 patients who received care from the Department of Veterans Affairs (VA) health system, those experiencing homelessness were more likely to be diagnosed with stage IV colorectal cancer compared with those who had housing. The patients who experienced homelessness also had longer hospital stays for all the cancer types studied. However, the findings differed across healthcare settings. In a commentary accompanying the study, Maria C. Raven, MD, MPH, associate Professor and Chief of Emergency Medicine at UCSF, said "Reducing healthcare disparities for people experiencing homelessness is essential, and the [VA] can serve as an example of what it takes to do so."

Cancer is a leading cause of death among older people experiencing homelessness. In this retrospective cohort study, researchers sought to characterize the diagnosis, treatment, surgical outcomes, and mortality by housing status of patients who receive care from the US Department of Veterans Affairs (VA) health system for colorectal, breast, or lung cancer. Researchers found that homelessness was associated with later stages at diagnosis for colorectal cancer.

In this commentary of the study "Housing Status, Cancer Care, and Associated Outcomes Among US Veterans", Maria C. Raven, MD, MPH, associate Professor and Chief of Emergency Medicine at UCSF, provides lessons from the Veterans Health Administration. In 2009, the VHA began a multipronged initiative designed to end and prevent homelessness among veterans, which led to a 45% reduction in veteran homelessness from 2009 to 2017. Dr. Raven writes, "The results of this study indicate that in addition to providing housing at comparatively high rates for unhoused veterans, the system’s initiative to prevent and end veteran homelessness has also likely helped reduce important disparities in oncologic care for this population."

Cancer is the leading cause of mortality for people experiencing homelessness (PEH). However, not much is known about cancer-related surgical outcomes among PEH. This retrospective cohort study aimed to characterize access to care among PEH, evaluate postoperative outcomes, and assess costs associated with surgery for malignancy among PEH. Researchers found that PEH were less likely to undergo surgery for malignancy at cancer centers than hose who are housed. People experiencing homelessness also had a higher risk of requiring unplanned surgery.

Older adults experiencing chronic homelessness have low rates of advance care planning despite high rates of morbidity and mortality. Researchers explored if rehousing people who experience homelessness into permanent supportive housing (PSH) would present an opportunity to introduce advance care planning (ACP). Researchers identified behavioral determinants related to ACP for formerly chronically homeless adults in PSH.

 Traumatic injury is a major cause of morbidity for people experiencing homelessness (PEH), however, injury patterns and subsequent hospitalization among PEH have not been studied on a national scale. In this national retrospective observational cohort study, researchers evaluated whether differences in mechanisms of injury exist between PEH and housed trauma patients in North America and whether the lack of housing is associated with increased adjusted odds of hospital admission. Researchers found that injured PEH had a significantly adjusted greater odds of hospital admissions.

Little is known how older adults with a current or recent experience of homelessness navigated the switch to telehealth during the COVID-19 pandemic. Researchers examined the perceptions and use of telehealth, sampling from a larger longitudinal study on homeless-experienced adults in Oakland, CA. They found that the participants experienced challenges accessing the necessary technologies for telehealth.

This study from BHHI researchers describes five distinct subgroups of the highest users of the health care system in San Francisco with differential comorbidities, health care needs, and social determinants of health, spanning from patients with medical comorbidities solely using medical services to patients grappling with housing insecurity, incarceration, substance use disorder, and mental health comorbidities. Frequent users of the health care system are not a homogenous population as previously thought. This study sheds new light on how to help the most vulnerable patients and inform clinicians and care coordination teams on making sure patients get the care they need the most. 

Patients with prolonged hospitalizations often require alternative levels of care (ALC) and there stays strain hospital capacity and patient flow. This study aimed to descriptively compare prolonged ALC and short ALC. Researchers found that patients with prolonged ALC were more likely to be older and have experienced homelessness. Furthermore, prolonged ALC patients were more likely to be admitted for acute care and had greater psychosocial complexity.