Prevalence of Prediabetes Among Adults

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  • An estimated 96 million adults aged 18 years or older had prediabetes in 2019 (Table 3).
  • Among US adults aged 18 years or older, crude estimates for 2017–2020 were:
    • 38.0% of all US adults had prediabetes, based on their fasting glucose or A1C level (Table 3).
    • 19.0% of adults with prediabetes reported being told by a health professional that they had this condition (Table 3).

Among US adults aged 18 years or older, age-adjusted data for 2017–2020 indicated:

  • 10.8% of adults had prediabetes, based on both elevated fasting plasma glucose and A1C levels (Appendix Table 5).
  • A higher percentage of men (41.0%) than women (32.0%) had prediabetes, based on their fasting glucose or A1C level (Appendix Table 6).
  • Prevalence of prediabetes (based on fasting glucose or A1C level) was similar among all racial/ethnic groups and education levels (Appendix Table 6).
Table 3. Estimated number, percentage, and awareness of prediabetesa among adults aged 18 years or older, United States, 2017–2020 and 2019
Characteristic Prediabetes,a
2019 estimates
Number in millions (95% CI) 		Prediabetes,a
2017–2020 estimates
Percentage (95% CI) 		Prediabetes awareness,b
2017–2020 estimates
Percentage (95% CI)
Total 96.0 (90.5–102.0) 38.0 (35.7–40.3) 19.0 (15.0–23.7)
Age group
18–44 32.2 (27.7–36.8) 27.8 (24.0–32.0) 13.8 (9.8–18.9)
45–64 37.4 (35.0–39.9) 44.8 (41.7–47.9) 20.6 (14.3–28.9)
≥65 26.4 (24.1–28.7) 48.8 (44.3–53.2) 23.0 (16.9–30.4)
Sex
Men 52.3 (48.0–56.6) 41.9 (38.4–45.6) 17.4 (13.4–22.2)
Women 43.7 (39.8–47.6) 34.3 (31.2–37.5) 20.9 (15.5–27.5)
Race-ethnicity
White, non-Hispanic 62.4 (57.4–67.4) 38.7 (35.5–41.9) 17.3 (11.8–24.7)
Black, non-Hispanic 12.4 (11.4–13.5) 39.2 (35.8–42.6) 21.9 (18.0–26.5)
Asian, non-Hispanic 6.0 (5.3–6.8) 37.3 (32.6–42.3) 30.1 (21.0–41.1)
Hispanic 14.3 (13.0–15.6) 34.5 (31.3–37.7) 20.9 (15.3–27.9)

Note: CI = confidence interval. Data are crude estimates (See Appendix B: Detailed Methods and Data Sources). Time period 2017–2020 covers January 2017 through March 2020 only.
a Prediabetes was defined as fasting plasma glucose values of 100 to 125 mg/dL or A1C values of 5.7% to 6.4%.
b Prediabetes awareness was based on self-report and estimated only among adults with prediabetes.
Data sources: 2017–March 2020 National Health and Nutrition Examination Survey; 2019 US Census Bureau data.

Trends in Prevalence of Prediabetes Among Adults

  • There were no significant changes in age-adjusted prevalence of prediabetes from 2005–2008 to 2017–2020 (Appendix Table 7). About one-third of US adults had prediabetes over the entire period.
  • Among adults with prediabetes, the age-adjusted percentage aware that they had this condition increased from 6.5% in 2005–2008 to 17.4% in 2017–2020 (Appendix Table 7).
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Report Pages

  1. National Diabetes Statistics Report
  2. Prevalence of Both Diagnosed and Undiagnosed Diabetes
  3. Prevalence of Diagnosed Diabetes
  4. Incidence of Newly Diagnosed Diabetes
  5. ›Prevalence of Prediabetes Among Adults
  6. Risk Factors for Diabetes-Related Complications
  7. Preventing Diabetes-Related Complications
  8. Coexisting Conditions and Complications
  9. Appendix