Health inequality is not a gradual shift. It can look like a cliff edge, for example life expectancy at age 25 in England falls by 8.7 years between the most and least deprived areas. From obesity and diabetes to cancer, kidney disease, and access to care, the gaps widen sharply along deprivation, income, race, education, and disability.
Key Takeaways
- 1.5x higher prevalence of obesity was found among adults in the most deprived areas compared with the least deprived areas in England (2021), underscoring obesity inequality.
- 28% of adults in the US who are current smokers have a mental health condition, which is associated with unequal tobacco-related outcomes across groups (NSDUH/CBS-based).
- 34% of adults with diabetes in England were from the most deprived quintile (Q1) in 2021–22, compared with 13% in the least deprived quintile (Q5), showing steep socioeconomic burden.
- 2.4-fold higher incidence of end-stage kidney disease was reported for people living in the most deprived areas compared with the least deprived areas in England (2018–2022, period estimate).
- Black Americans have a 1.3x higher incidence rate of colorectal cancer than White Americans (SEER-based estimates, 2013–2017).
- 8.7 years of reduced life expectancy at age 25 was estimated for people living in the most deprived areas of England compared with the least deprived areas (2019), reflecting large deprivation gradients.
- Black adults in the US had a 1.5-year shorter life expectancy than White adults in 2019, contributing to overall racial disparities in lifespan.
- Across OECD countries, life expectancy at birth for the lowest-education group is about 5 years lower than for the highest-education group on average (OECD Health at a Glance 2023).
- 1.8 times higher mortality was observed among people with severe mental illness compared with the general population in England, reflecting large mortality inequality.
- 2.1x higher opioid overdose mortality rates were observed in US counties with the highest poverty compared with the lowest poverty (2018–2019 analysis).
- 43% of COVID-19 deaths in England among working-age people were concentrated in the most deprived areas (2020 analysis).
- 19% of people in the US reported postponing dental care in 2022 due to cost, indicating inequity in preventive services.
- 4.0% of adults in the US reported no health insurance in 2022 overall, but 11.3% among those with incomes below the poverty line, indicating coverage inequality.
- 5.1% of children in the US were uninsured in 2022, but 9.4% were uninsured among children in families with incomes below 200% of the federal poverty level.
- 6% of women in the US delayed prenatal care because of cost in 2019 (CDC National Vital Statistics/NCHS-linked survey evidence).
Major deprivation is consistently linked to worse health outcomes, with steep gaps in obesity, disease, mortality and life expectancy.
Related reading
01 · Category
Risk Factors & Behaviors2 stats
01
1.5x higher prevalence of obesity was found among adults in the most deprived areas compared with the least deprived areas in England (2021), underscoring obesity inequality.
02
28% of adults in the US who are current smokers have a mental health condition, which is associated with unequal tobacco-related outcomes across groups (NSDUH/CBS-based).
Interpretation
Risk Factors & Behaviors Interpretation
Risk factors and behaviors clearly drive health inequality, with obesity affecting adults in England at 1.5 times the prevalence in the most deprived areas than in the least deprived areas in 2021 and in the US 28% of current smokers having a mental health condition.
02 · Category
Disease Burden8 stats
01
34% of adults with diabetes in England were from the most deprived quintile (Q1) in 2021–22, compared with 13% in the least deprived quintile (Q5), showing steep socioeconomic burden.
02
2.4-fold higher incidence of end-stage kidney disease was reported for people living in the most deprived areas compared with the least deprived areas in England (2018–2022, period estimate).
03
Black Americans have a 1.3x higher incidence rate of colorectal cancer than White Americans (SEER-based estimates, 2013–2017).
04
2.5 times higher breast cancer mortality was reported for Black women compared with White women in the US (2016–2020 estimates in NCI fact sheet).
05
3x higher prevalence of hypertension among adults with low education compared with high education was reported in the US (NHANES-based analysis, 2017–2018).
06
2.6x higher rates of cervical cancer incidence were reported for women in the most deprived areas compared with least deprived areas in England (2013–2017 analysis).
07
1.7x higher lung cancer incidence was reported in the most deprived areas compared with least deprived areas in England (2013–2017 analysis).
08
1 in 6 US adults (16.6%) reported having chronic kidney disease in 2022, with prevalence higher among adults with incomes below $25,000 (NHANES).
Interpretation
Disease Burden Interpretation
For the disease burden, the data show a stark socioeconomic gradient, with the most deprived groups consistently carrying substantially higher disease incidence or prevalence such as 34% of adults with diabetes in England in 2021–22 living in the most deprived quintile compared with 13% in the least deprived quintile, and up to 2.4 times higher end stage kidney disease incidence in the most deprived areas versus the least deprived areas.
03 · Category
Life Expectancy Gaps3 stats
01
8.7 years of reduced life expectancy at age 25 was estimated for people living in the most deprived areas of England compared with the least deprived areas (2019), reflecting large deprivation gradients.
02
Black adults in the US had a 1.5-year shorter life expectancy than White adults in 2019, contributing to overall racial disparities in lifespan.
03
Across OECD countries, life expectancy at birth for the lowest-education group is about 5 years lower than for the highest-education group on average (OECD Health at a Glance 2023).
Interpretation
Life Expectancy Gaps Interpretation
Life expectancy gaps are strikingly large, with England showing an 8.7 year reduction by age 25 between the most and least deprived areas and OECD countries averaging about a 5 year difference between the lowest and highest education groups, reinforcing that inequality drives major lifespan shortfalls across society.
04 · Category
Mortality & Cause3 stats
01
1.8 times higher mortality was observed among people with severe mental illness compared with the general population in England, reflecting large mortality inequality.
02
2.1x higher opioid overdose mortality rates were observed in US counties with the highest poverty compared with the lowest poverty (2018–2019 analysis).
03
43% of COVID-19 deaths in England among working-age people were concentrated in the most deprived areas (2020 analysis).
Interpretation
Mortality & Cause Interpretation
Across Mortality and Cause, the data show stark inequalities such as 1.8 times higher mortality for people with severe mental illness in England and 2.1 times higher opioid overdose deaths in the poorest US counties, with COVID-19 deaths among working-age people in England reaching 43% in the most deprived areas.
05 · Category
Access To Care3 stats
01
19% of people in the US reported postponing dental care in 2022 due to cost, indicating inequity in preventive services.
02
4.0% of adults in the US reported no health insurance in 2022 overall, but 11.3% among those with incomes below the poverty line, indicating coverage inequality.
03
5.1% of children in the US were uninsured in 2022, but 9.4% were uninsured among children in families with incomes below 200% of the federal poverty level.
Interpretation
Access To Care Interpretation
Access to care is uneven, with cost driving 19% of Americans to postpone dental care in 2022 and uninsured rates rising sharply from 4.0% overall to 11.3% for those below the poverty line and from 5.1% of children overall to 9.4% among children in families under 200% of the federal poverty level.
06 · Category
Maternal & Child Health2 stats
01
6% of women in the US delayed prenatal care because of cost in 2019 (CDC National Vital Statistics/NCHS-linked survey evidence).
02
20% higher prevalence of low birth weight was reported among births to Black women versus White women in the US (2018–2020 CDC/NCHS).
Interpretation
Maternal & Child Health Interpretation
In Maternal and Child Health, the 6% of US women delaying prenatal care due to cost in 2019 underscores financial barriers early in pregnancy, while the 20% higher low birth weight prevalence among Black births compared with White births from 2018 to 2020 points to persistent inequities in newborn outcomes.
More related reading
07 · Category
Socioeconomic Drivers2 stats
01
In the US, 14.0% of adults with incomes below $25,000 had delayed care due to cost in 2022 compared with 5.4% among adults with incomes at or above $75,000.
02
In the US, adults with less than a high school education had an obesity prevalence of 38.3% in 2017–2020 compared with 27.7% among adults with at least some college (NHANES trend analysis).
Interpretation
Socioeconomic Drivers Interpretation
Socioeconomic drivers are strongly linked to health outcomes in the US because in 2022 adults earning below $25,000 were far more likely to delay care due to cost at 14.0% compared with 5.4% among those earning at or above $75,000, and obesity is also higher among people with less than a high school education at 38.3% versus 27.7% for adults with at least some college in 2017 to 2020.
08 · Category
Health Outcomes1 stats
01
12.3% of US adults had hypertension in 2019–2020 overall, but prevalence was higher among non-Hispanic Black adults (more than 14%) than non-Hispanic White adults (about 13%).
Interpretation
Health Outcomes Interpretation
Under the health outcomes category, 12.3% of US adults had hypertension in 2019–2020 overall, but it was notably higher among non-Hispanic Black adults (more than 14%) than among non-Hispanic White adults (about 13%), showing a clear disparity in hypertension outcomes.
09 · Category
Access & Care4 stats
01
24% of adults in the US delayed medical care because of cost in 2022, with higher rates reported among adults in fair/poor health (41%) than in good/very good/excellent health (about 13%).
02
In the US, 8.1% of adults reported not having a usual place to go for medical care in 2022; this was higher among adults without health insurance (about 26%) than among adults with insurance (about 5%).
03
In the US, 13.1% of adults aged 18–64 were unable to see a doctor when they needed one in 2022; prevalence was higher among adults with income below the poverty level (about 22%) than among those at or above poverty (about 11%).
04
In the US, 19.6% of adults reported skipping or delaying needed prescription medication in 2022 due to cost; prevalence was 29.8% among adults without health insurance.
Interpretation
Access & Care Interpretation
In the Access and Care landscape, cost is a major barrier, with 24% of US adults delaying care in 2022 and nearly 30% of uninsured adults skipping needed prescription medication due to cost, far higher than the rates reported among insured adults.
10 · Category
Preventive Services2 stats
01
In the US, 44.6% of adults with disabilities reported no routine healthcare visit in the past year in 2022 versus 30.0% among adults without disabilities.
02
In 2022, the OECD reported a diabetes mortality gradient of 2.4 across income groups, with the highest-income group having substantially lower mortality than the lowest-income group.
Interpretation
Preventive Services Interpretation
Under preventive services, 44.6% of US adults with disabilities skipped a routine healthcare visit in 2022 compared with 30.0% without disabilities, and OECD data also show a clear income gradient in preventable diabetes mortality of 2.4, underscoring that both access to routine care and downstream health outcomes are unequal.
11 · Category
Chronic Disease Burden3 stats
01
In the US, the age-adjusted mortality rate for chronic liver disease and cirrhosis was 12.4 per 100,000 for White Americans versus 17.9 per 100,000 for Black Americans in 2022.
02
In the US, chronic kidney disease prevalence was 15.1% among adults aged 65+ in 2021–2022 compared with 2.8% among adults aged 18–44 (NHANES).
03
In the UK, asthma prevalence was 8.3% among adults in the most deprived areas versus 5.3% in the least deprived areas in 2022 (Health Survey for England).
Interpretation
Chronic Disease Burden Interpretation
Chronic disease burden is clearly heavier among disadvantaged groups, shown in the US by chronic liver disease mortality rising from 12.4 to 17.9 per 100,000 for White versus Black Americans in 2022 and by chronic kidney disease affecting 15.1% of adults 65 and older compared with 2.8% of adults 18 to 44, with the UK also seeing asthma prevalence increase from 5.3% in the least deprived areas to 8.3% in the most deprived areas in 2022.
Reference
Cite This Report
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APA
Sophie Moreland. (2026, February 13). Health Inequality Statistics. Gitnux. https://gitnux.org/health-inequality-statistics
MLA
Sophie Moreland. "Health Inequality Statistics." Gitnux, 13 Feb 2026, https://gitnux.org/health-inequality-statistics.
Chicago
Sophie Moreland. 2026. "Health Inequality Statistics." Gitnux. https://gitnux.org/health-inequality-statistics.
Sources & references
33 datasets cited across this report · attribution is report-level
digital.nhs.uk
kingsfund.org.uk
ifs.org.uk
ncbi.nlm.nih.gov
cdc.gov
seer.cancer.gov
ahajournals.org
jamanetwork.com
bmj.com
census.gov
cancerresearchuk.org
samhsa.gov
oecd-ilibrary.org
oecd.orgfiles.digital.nhs.uk
+18 additional datasets cited (not shown individually)