Prediabetes and insulin resistance statistics 2026: prevalence, awareness and progression

US adults aged 18 and older are estimated to have prediabetes¹

Figure from CDC's National Diabetes Statistics Report fast facts, page updated September 2026.

of Americans aged 65 and older have prediabetes, about 31.3 million people¹

American adults have prediabetes, according to CDC²

of US adults had prediabetes in 2017-2020, based on fasting glucose or A1C³

Crude estimate from the 2024 edition of the CDC report, which used NHANES 2017-March 2020 data.

of men versus women had prediabetes in 2017-2020 (age-adjusted)³

of US adults met glycemic thresholds for prediabetes in pooled NHANES data from 2011 to March 2020⁴

Prevalence was 45.7% among Black adults, 41.6% among Hispanic adults, 40.8% among White adults and 39.4% among Asian adults (unadjusted).

of US adolescents aged 12 to 18 had prediabetes in 2005-2016⁵

The same study found prediabetes in 24.0% of young adults aged 19 to 34.

people in the US had diagnosed or undiagnosed diabetes in 2023, or 12.0% of the population¹

of US adults with diabetes are undiagnosed, about 11.0 million people¹

of US adults had diabetes in August 2021-August 2023, including 4.5% who were undiagnosed⁶

Measured in NHANES using lab tests plus self-reported diagnosis; 11.3% had diagnosed diabetes.

of US adults with obesity had diabetes in August 2021-August 2023, versus 6.8% of adults at underweight or normal weight⁶

of US adults aged 60 and older had diabetes in August 2021-August 2023⁶

Prevalence was 3.6% at ages 20-39 and 17.7% at ages 40-59.

new cases of diabetes were diagnosed among US adults in 2021, or 5.9 per 1,000 people³

was the total direct and indirect cost of diagnosed diabetes in the US in 2022³

Direct medical costs were $307 billion and indirect costs $106 billion (2022 dollars).

of US adults with prediabetes reported being told by a health professional that they had it (2017-2020)³

was the rise in age-adjusted prediabetes awareness from 2005-2008 to 2017-2020³

of adults with prediabetes in NHANES 2011-2020 were unaware of their condition⁷

Based on 2,749 adult participants identified as having prediabetes.

was the decline in prediabetes unawareness between the 2011-2012 and 2017-2020 NHANES cycles⁷

higher odds of prediabetes awareness among adults who had a glucose test in the previous three years⁷

Adjusted odds ratio 3.97 (95% CI 2.76-5.71); the strongest factor identified in the study.

of adults meeting glycemic thresholds for prediabetes were aware of it (NHANES 2011 to March 2020)⁴

Awareness was 11.5% among adults without a high school diploma and 17.7% among college graduates.

of nondiabetic US adults aged 18 to 44 had insulin resistance in 2015-2018⁸

Defined as HOMA-IR of 2.5 or higher; prevalence was 44.8% in 2007-2010 (trend not statistically significant).

of young adults with insulin resistance are not obese⁸

of young adults with versus without insulin resistance had obesity⁸

Hypertension was also more common: 31.3% vs 14.7%.

of nondiabetic US adults had insulin resistance in 2017-2018, up from 24.8% in 1999-2000⁹

Age-standardized; insulin resistance defined using a HOMA-IR cutoff of 2.6 (the 66.7th percentile).

of nondiabetic US adults had hyperinsulinemia (fasting insulin above 10 uU/mL) in 2017-2018, up from 28.2% in 1999-2000⁹

of US adolescents without diabetes or prediabetes had insulin resistance in 2017-2020, up from 14.0% in 1999-2000¹⁰

of US adults older than 20 had insulin resistance based on 2003 NHANES data¹¹

of people with prediabetes progress to diabetes each year¹²

The same review notes a similar share convert back to normal glucose levels each year.

of people with prediabetes will eventually develop diabetes, according to an American Diabetes Association expert panel¹²

person-years was the diabetes incidence in the placebo group of the Diabetes Prevention Program¹³

Incidence was 7.8 with metformin and 4.8 with lifestyle intervention; average follow-up 2.8 years.

reduction in type 2 diabetes incidence with intensive lifestyle intervention versus placebo in the Diabetes Prevention Program¹³

Metformin reduced incidence by 31%.

risk reduction in people over 60 through CDC's National Diabetes Prevention Program lifestyle change program²

CDC cites a 58% reduction overall.

lower diabetes incidence in the lifestyle group versus placebo after 15 years of follow-up¹⁴

Metformin lowered incidence by 18%.

of the placebo group had developed diabetes by year 15 of the Diabetes Prevention Program Outcomes Study¹⁴

Cumulative incidence was 55% in the lifestyle group and 56% in the metformin group.