Defining Housing Instability in the Modern Context

Housing instability is a persistent public health challenge that extends far beyond literal homelessness. It encompasses a spectrum of precarious living situations: frequent moves, doubling up with relatives, being behind on rent, housing cost burden exceeding 50% of income, living in substandard conditions, or facing imminent eviction. According to the U.S. Department of Housing and Urban Development, at least one in four households is housing cost-burdened, spending more than 30% of income on housing. For individuals with chronic conditions like diabetes, such instability creates a cascade of barriers that directly interfere with self-management and clinical outcomes. The CDC recognizes housing as a key social determinant of health, noting that unstable housing increases the risk of developing and poorly managing chronic diseases. Understanding the full scope of housing instability is essential for clinicians, policymakers, and community organizations striving to improve diabetes care across populations.

How Housing Instability Undermines Diabetes Self-Management

Effective diabetes control requires consistent daily routines, access to nutritious food, refrigerated insulin, regular blood glucose monitoring, and reliable communication with healthcare providers. Housing instability disrupts each of these pillars. Frequent relocation makes it harder to establish a relationship with a primary care provider, maintain a steady pharmacy, or keep diabetes supplies organized. Lack of a safe, private space can make insulin injections or glucose checks stressful or impossible. Moreover, the constant uncertainty of where one will sleep shifts cognitive bandwidth away from health priorities to immediate survival needs.

Biological Stress Pathways

Chronic housing-related stress activates the hypothalamic-pituitary-adrenal axis, elevating cortisol and catecholamines. These hormones promote insulin resistance and exacerbate hyperglycemia. A 2020 study in Diabetes Care found that adults experiencing housing instability had HbA1c levels on average 0.6% higher than stably housed peers, even after adjusting for income and education. The physiological toll compounds behavioral challenges, creating a vicious cycle of worsening metabolic control. Additional research has shown that elevated cortisol from prolonged stress can directly impair pancreatic beta-cell function, further accelerating the progression of dysglycemia.

Disrupted Routines and Mental Health

Diabetes management thrives on predictability—meal timing, exercise schedules, sleep patterns. Housing instability dismantles this structure. A person doubling up in a crowded apartment may not feel comfortable checking blood glucose in front of others. A family facing eviction may prioritize packing belongings over tracking carbohydrates. The resulting chaotic schedule leads to erratic insulin dosing and missed monitoring sessions. Furthermore, the psychological toll of housing insecurity—anxiety, depression, hopelessness—directly reduces motivation for self-care and increases the likelihood of diabetes distress. Studies report that individuals with housing instability are 2.5 times more likely to screen positive for moderate to severe depression, a condition tightly linked to worse glycemic control.

Clinical Evidence Linking Housing Instability to Diabetes Outcomes

Over the past two decades, research has firmly documented the association. A systematic review published in Health Affairs analyzed 18 studies and concluded that housing instability increased the odds of hospital admission for diabetic ketoacidosis by 40–85% among adults with type 1 diabetes. Among those with type 2 diabetes, unstable housing correlated with higher rates of emergency department visits and lower likelihood of achieving individualized HbA1c targets. Homelessness—the most severe form of instability—carries the worst prognosis, with mortality rates from diabetes complications three to four times higher than the general population. A longitudinal study from the Veterans Health Administration found that veterans experiencing homelessness had an average HbA1c of 8.9% compared to 7.6% among housed veterans, even after controlling for age, sex, and comorbidity burden.

Medication Adherence Gaps

Maintaining a continuous supply of diabetes medications is nearly impossible without a fixed address. Mail-order pharmacies will not deliver to shelters or temporary addresses; prescription refills require consistent follow-up; and lost or stolen supplies are difficult to replace when resources are scarce. Data from the National Health Interview Survey indicate that adults who reported housing insecurity were 2.1 times more likely to report cost-related medication nonadherence, a factor strongly linked to worse glycemic outcomes and higher rates of microvascular complications such as retinopathy and nephropathy. Furthermore, the lack of safe storage for insulin often leads to temperature degradation; insulin left in extreme heat or cold loses potency, further compromising glycemic control.

Nutrition and Food Access

The intersection of housing instability and food insecurity is well documented. Without a stable place to cook or store food, individuals often rely on cheap, calorie-dense, nutrient-poor options that spike blood glucose. Many shelters lack proper refrigeration for patients who require insulin. Even those living in their own apartments but paying more than half their income on rent frequently must choose between purchasing diabetes-friendly groceries and paying the electric bill. Clinical guidelines increasingly call for routine screening for both housing and food insecurity as part of comprehensive diabetes care. The American Diabetes Association's Standards of Care now recommend that providers assess social determinants of health, including housing, and connect patients to resources.

Barriers Across the Care Continuum

Housing instability creates barriers at every stage of diabetes care, from screening and diagnosis to ongoing management and complication prevention. Primary care providers may not screen for housing status, so the underlying driver of poor glucose control remains hidden. Referrals to dietitians, diabetes educators, or endocrinologists are often missed when patients cannot be reached by phone or mail. Transportation becomes another hurdle: moving frequently may place individuals far from the clinics where they originally established care, forcing them to navigate unfamiliar healthcare systems repeatedly.

Impact on Diabetes Technology Use

Continuous glucose monitors (CGMs) and insulin pumps have transformed diabetes management, but these technologies are rarely accessible to unstably housed individuals. CGMs require regular sensor changes and pairing with smartphones or dedicated receivers—devices that may be stolen, lost, or lack consistent charging. Insulin pumps demand reliable power sources for recharging and secure attachment during sleep; a person living in a shelter may not have a private place to change infusion sets. Even CGM data sharing with clinicians depends on internet connectivity or a fixed address for shipping replacement sensors. As a result, the digital divide in diabetes care deepens the outcome gap between housed and unhoused populations.

Pediatric and Family Considerations

Children and adolescents with diabetes are especially vulnerable to housing instability. Frequent moves can disrupt school-based diabetes management plans, making it difficult for school nurses to coordinate care. Parents struggling to secure housing may deprioritize clinic appointments or fall behind on insurance paperwork. Research from the Journal of Pediatric Endocrinology and Metabolism found that teens from households with housing cost burden had significantly higher HbA1c levels (mean 9.2% vs. 8.1%) and more frequent diabetes-related hospitalizations. The added stress on caregivers further erodes the support system that young people with diabetes need.

Interventions That Bridge Housing and Diabetes Care

Recognizing the bidirectional relationship, several innovative programs are integrating housing support into diabetes management. The Housing First model, which prioritizes immediate provision of permanent supportive housing without requiring sobriety or treatment compliance, has shown promising results. Among chronically homeless individuals with diabetes, Housing First participants achieved a 0.8% drop in HbA1c within 12 months, along with significant reductions in emergency department utilization. The program also improved self-reported medication adherence and reduced diabetes-related distress scores.

Patient-Centered Medical Homes and Housing Partnerships

Federally Qualified Health Centers (FQHCs) are increasingly colocating housing case managers with diabetes care teams. These partnerships allow providers and housing specialists to communicate directly about patient needs—such as securing stable housing, applying for rental assistance, or connecting to utility payment programs. A randomized trial in Boston demonstrated that patients enrolled in an integrated housing-diabetes program had 35% fewer hospitalizations over two years compared to those receiving standard care alone. The intervention combined medical case management with intensive housing navigation, resulting in improved HbA1c and lower total healthcare costs.

Policy Levers: Medicaid and Housing Vouchers

Policy changes are also emerging. Some states have used Medicaid 1115 waivers to pay for short-term rental assistance for high-need populations with chronic conditions like diabetes. The evidence shows that every dollar invested in housing support reduces healthcare costs by USD 1.20 to USD 2.00 within two years, largely through avoided hospitalizations. Similarly, expansion of Section 8 Housing Choice Vouchers to target individuals with diabetes and other chronic illnesses has been proposed as a cost-effective public health strategy. The Kaiser Family Foundation has documented that housing interventions through Medicaid can lower blood glucose levels and reduce diabetes complications.

Community-Based Solutions and Peer Support

At the community level, mobile diabetes clinics that travel to shelters and temporary housing sites have improved access to care. Peer educators who have personally experienced housing instability are especially effective at building trust and delivering self-management education. Programs like the Diabetes Prevention and Management Program at the National Health Care for the Homeless Council offer culturally tailored curriculum that addresses the real-world constraints of unstable housing, teaching clients how to manage diabetes with limited storage, refrigeration, and routine. These programs often incorporate harm reduction principles, focusing on achievable goals rather than perfect adherence.

Technology Adaptations for Unstable Environments

Digital health tools designed for stably housed patients often fail for those without consistent internet access, a secure address, or a smartphone. However, low-tech adaptations—such as simplified paper logbooks, glucose meters that store results offline until a clinic visit, and text-message-based check-ins using toll-free numbers—can bridge the gap. Clinics serving homeless populations have reported success using glucose meters preloaded with test strips and provided alongside small carrying pouches that clip to a belt or backpack. Some programs distribute solar-powered chargers for CGMs and offer locker storage at drop-in centers for supplies.

Building Supportive Housing with Health Services

Permanent supportive housing that includes on-site health services is a model gaining traction. For example, the Corporation for Supportive Housing supports developments where case managers, nurses, and diabetes educators visit residents. Early data from such sites show that residents with diabetes experience fewer emergency visits and report higher satisfaction with care management. The co-location of services minimizes transportation barriers and allows for spontaneous check-ins that prevent small problems from escalating into crises.

Future Directions: Research and Practice Gaps

Despite growing recognition, significant gaps remain. Most diabetes clinical trials exclude participants who are unstably housed, limiting the evidence base for treatment efficacy in this population. Real-world effectiveness studies are urgently needed to compare different housing intervention models (e.g., rental assistance vs. supportive housing vs. rapid rehousing) on diabetes outcomes. Additionally, the measurement of housing instability itself needs standardization, as current definitions vary widely across studies, hampering cross-comparison. Researchers are developing validated screening tools like the Housing Instability Index to facilitate more uniform data collection.

Addressing Structural Racism and Inequity

Any discussion of housing instability and diabetes must acknowledge that Black, Indigenous, and Latino communities face disproportionately high rates of both conditions due to historical discriminatory housing policies such as redlining, ongoing residential segregation, and unequal economic opportunities. Interventions that fail to address these structural drivers risk perpetuating disparities. Future work should center the voices of affected communities and prioritize policies that dismantle systemic barriers rather than placing the burden of adaptation solely on individuals. Community-led initiatives that pair housing advocacy with diabetes self-management education show promise in reducing racial inequities in glycemic control.

Conclusion: A Call for Integrated Care

Housing instability is not an isolated social problem—it is a fundamental determinant of diabetes outcomes. As the number of adults living with diabetes in the United States surpasses 37 million, equating to roughly one in ten people, the urgency to address housing as a component of comprehensive diabetes care grows. Healthcare systems, public health agencies, housing authorities, and policymakers must collaborate to create pathways that ensure individuals have not only stable housing but also the support structures needed to manage their health effectively. Screening for housing instability should become as routine as checking HbA1c. Referrals to housing resources should be embedded in diabetes treatment plans. And investment in affordable, stable housing should be recognized as one of the most powerful interventions available to improve metabolic control and reduce the human and economic toll of diabetes complications.

Only by taking housing instability out of the shadows and into the clinic, the community, and the legislative chamber can we hope to close the stark outcome gaps that persist today. The path forward requires a commitment to integrated care that sees a person's address as being as important as their blood sugar level—and that treats both with the same urgency.