Arthritis is the leading cause of disability among adults in the United States, limiting everyday activities for nearly 25 million Americans. In 2023, an estimated 24.8 million adults with arthritis reported activity limitations, meaning almost half (47.8%) of everyone with the condition struggles with routine physical tasks. While arthritis tops the list as a single diagnosis, the full picture of disability in the U.S. involves a range of chronic conditions, mental health disorders, and demographic factors that shape who is most affected.
Why Arthritis Ranks First
Arthritis refers to inflammation in one or more joints, and it encompasses over 100 different conditions, including osteoarthritis and rheumatoid arthritis. What makes it the leading cause of disability isn’t necessarily its severity compared to something like stroke, but its sheer prevalence. Tens of millions of Americans have it, and it tends to worsen gradually over years, progressively eroding a person’s ability to walk, grip objects, climb stairs, or perform basic household tasks.
The condition disproportionately affects older adults, but it isn’t limited to them. Younger adults with autoimmune forms of arthritis can experience significant limitations in their 30s and 40s. Because there is no cure for most forms, the disability burden accumulates across a lifetime, making it a persistent drain on quality of life and economic productivity.
Other Chronic Conditions That Drive Disability
While arthritis affects the most people overall, other chronic diseases cause more severe disability on a per-person basis. Stroke produces the highest level of physical disability at the time of diagnosis, followed by cancer and diabetes. After the initial event, stroke also leads to the fastest ongoing decline in physical function, with lung disease and heart disease close behind.
Diabetes deserves special attention because its disability burden accelerates over time. In the early years after diagnosis, diabetes causes less impairment than stroke or cancer. But in later stages, the rate at which physical disability worsens is higher for diabetes than for almost any other major chronic condition. This long tail of increasing impairment, combined with how common diabetes is, makes it one of the most significant contributors to disability nationwide.
Mental health conditions also play an outsized role. Globally, mental disorders are the leading cause of years lived with disability, accounting for about one in every six years of healthy life lost to any disabling condition. Depression, anxiety, and substance use disorders may not always show up in traditional disability surveys focused on physical function, but they profoundly limit a person’s ability to work, maintain relationships, and live independently.
The Six Types of Functional Disability
Disability in the U.S. is typically measured across six functional categories. Mobility disability is the most common, affecting about 13.6% of adults. This includes serious difficulty walking or climbing stairs. Cognitive disability, which covers difficulty concentrating, remembering, or making decisions, comes second at 10.7%.
The remaining types break down as follows:
- Independent living difficulty (trouble running errands alone): 6.7%
- Hearing difficulty (deafness or serious hearing impairment): 5.8%
- Vision difficulty (blindness or serious trouble seeing even with glasses): 4.6%
- Self-care difficulty (trouble dressing or bathing): 3.7%
Many people experience more than one type simultaneously. Someone with severe arthritis in their knees and hands, for example, might report both mobility and self-care limitations. This overlap helps explain why disability’s total impact is greater than any single category suggests.
Who Is Most Affected
Disability rates rise sharply with age, but they also vary significantly by race, ethnicity, and sex. Women are more likely than men to have health conditions that limit their daily activities. Among adults 40 and older, Black (non-Hispanic) adults report disability-related health conditions at a rate of 31.8%, compared to lower rates among non-Hispanic White adults. Asian (non-Hispanic) adults report the lowest rates at 17.2%.
Specific conditions drive these disparities. Disability-related hypertension is about three times as common among Black adults (3.5%) as among White adults (1.2%). Hispanic individuals have higher rates of disability-related diabetes (3.2%) and hypertension (2.7%) than White adults, though lower rates of disability-related arthritis. These gaps reflect longstanding differences in access to preventive care, environmental exposures, and the chronic stress associated with economic inequality.
The Financial Weight of Disability
Disability carries enormous economic consequences that go beyond medical bills. Households affected by disability face an earnings penalty estimated at 15 to 70 percent of their income, depending on the type and severity of the condition. For a typical single-earner household with two adults, that translates to roughly a $25,000 annual drop in household income.
This financial hit compounds over time. Lower earnings mean less saved for retirement, reduced access to quality housing, and greater reliance on public assistance programs. Healthcare costs pile on top of lost wages: people with disabilities are far more likely to report unexpected major medical expenses. The combination of earning less and spending more on care creates a cycle that is extremely difficult to escape, particularly for those who develop disabling conditions earlier in life.
Mobility Loss as the Core Challenge
Across nearly every condition and demographic group, mobility disability is the thread that ties the data together. It is the most reported type of functional limitation, the primary way arthritis manifests as disability, and the outcome most strongly predicted by stroke, lung disease, and heart disease. Losing the ability to move freely affects everything: whether you can get to a doctor’s appointment, hold a job that requires standing, or simply walk to the mailbox.
This is partly why arthritis holds its position as the number one cause. It doesn’t kill as many people as heart disease or cancer, but it quietly erodes mobility in millions of adults over decades. By the time someone’s arthritis is severe enough to count as disabling, the limitations are usually permanent and progressive, reshaping daily life in ways that ripple outward into finances, mental health, and social connection.