{
  "id": "us_adult_obesity_nhanes",
  "title": "Age-adjusted prevalence of overweight, obesity, and severe obesity among U.S. adults",
  "geography": "United States",
  "unit": "Percent of adults (age-adjusted)",
  "definitions": {
    "overweight": "BMI 25.0\u201329.9",
    "obesity": "BMI \u2265 30.0",
    "severe_obesity": "BMI \u2265 40.0"
  },
  "survey": "NHANES / NHES (measured height and weight); pregnant women excluded",
  "age_adjustment_20plus": "Direct method to U.S. Census 2000 using age groups 20\u201339, 40\u201359, and 60 and older",
  "age_adjustment_20_74": "Direct method to U.S. Census 2000 using age groups 20\u201339, 40\u201359, and 60\u201374",
  "gap_note": "No continuous NHANES cycle spanning March 2020\u2013July 2021 because of COVID-19 suspension; latest cycle is August 2021\u2013August 2023.",
  "retrieved_utc": "2026-11-05T21:07:44Z",
  "sources": [
    {
      "id": "hestat111",
      "name": "NCHS Health E-Stat 111: Prevalence of Overweight, Obesity, and Severe Obesity Among Adults Age 20 and Older: United States, 1960\u20131962 Through August 2021\u2013August 2023",
      "url": "https://www.cdc.gov/nchs/data/hestat/hestat111.htm",
      "pdf": "https://www.cdc.gov/nchs/data/hestat/hestat111.pdf"
    },
    {
      "id": "data_cdc_28df_2bwy",
      "name": "Related NHANES obesity CSV on data.cdc.gov (through 2017\u20132018)",
      "download_url": "https://data.cdc.gov/api/v3/views/28df-2bwy/export.csv?accessType=DOWNLOAD",
      "note": "Used as cross-check for 1999\u20132018 values; Health E-Stat 111 is the curated longer series including 2021\u20132023."
    }
  ],
  "adults_20_plus": [
    {
      "period": "1988-1994",
      "obesity": 22.9,
      "obesity_se": 0.7,
      "overweight": 33.1,
      "overweight_se": 0.6,
      "severe_obesity": 2.8,
      "severe_obesity_se": 0.2,
      "n": 16235
    },
    {
      "period": "1999-2000",
      "obesity": 30.5,
      "obesity_se": 1.5,
      "overweight": 34.0,
      "overweight_se": 1.0,
      "severe_obesity": 4.7,
      "severe_obesity_se": 0.6,
      "n": 4117
    },
    {
      "period": "2001-2002",
      "obesity": 30.5,
      "obesity_se": 1.1,
      "overweight": 35.1,
      "overweight_se": 1.1,
      "severe_obesity": 5.1,
      "severe_obesity_se": 0.5,
      "n": 4413
    },
    {
      "period": "2003-2004",
      "obesity": 32.2,
      "obesity_se": 1.2,
      "overweight": 34.1,
      "overweight_se": 1.1,
      "severe_obesity": 4.8,
      "severe_obesity_se": 0.6,
      "n": 4431
    },
    {
      "period": "2005-2006",
      "obesity": 34.3,
      "obesity_se": 1.4,
      "overweight": 32.6,
      "overweight_se": 0.8,
      "severe_obesity": 5.9,
      "severe_obesity_se": 0.5,
      "n": 4356
    },
    {
      "period": "2007-2008",
      "obesity": 33.7,
      "obesity_se": 1.1,
      "overweight": 34.3,
      "overweight_se": 0.8,
      "severe_obesity": 5.7,
      "severe_obesity_se": 0.4,
      "n": 5550
    },
    {
      "period": "2009-2010",
      "obesity": 35.7,
      "obesity_se": 0.9,
      "overweight": 33.0,
      "overweight_se": 1.0,
      "severe_obesity": 6.3,
      "severe_obesity_se": 0.2,
      "n": 5926
    },
    {
      "period": "2011-2012",
      "obesity": 34.9,
      "obesity_se": 1.4,
      "overweight": 33.6,
      "overweight_se": 1.3,
      "severe_obesity": 6.4,
      "severe_obesity_se": 0.6,
      "n": 5181
    },
    {
      "period": "2013-2014",
      "obesity": 37.7,
      "obesity_se": 0.9,
      "overweight": 32.5,
      "overweight_se": 0.8,
      "severe_obesity": 7.7,
      "severe_obesity_se": 0.7,
      "n": 5455
    },
    {
      "period": "2015-2016",
      "obesity": 39.6,
      "obesity_se": 1.6,
      "overweight": 31.6,
      "overweight_se": 0.8,
      "severe_obesity": 7.7,
      "severe_obesity_se": 0.6,
      "n": 5337
    },
    {
      "period": "2017-2018",
      "obesity": 42.4,
      "obesity_se": 1.8,
      "overweight": 30.7,
      "overweight_se": 0.9,
      "severe_obesity": 9.2,
      "severe_obesity_se": 0.9,
      "n": 5120
    },
    {
      "period": "2021-2023",
      "obesity": 40.3,
      "obesity_se": 1.9,
      "overweight": 31.7,
      "overweight_se": 0.9,
      "severe_obesity": 9.7,
      "severe_obesity_se": 0.7,
      "n": 5929,
      "period_label": "August 2021\u2013August 2023"
    }
  ],
  "adults_20_74": [
    {
      "period": "1960-1962",
      "obesity": 13.4,
      "obesity_se": 0.5,
      "overweight": 31.5,
      "overweight_se": 0.5,
      "severe_obesity": 0.9,
      "severe_obesity_se": 0.1,
      "n": 6126
    },
    {
      "period": "1971-1974",
      "obesity": 14.5,
      "obesity_se": 0.4,
      "overweight": 32.7,
      "overweight_se": 0.6,
      "severe_obesity": 1.3,
      "severe_obesity_se": 0.2,
      "n": 12911
    },
    {
      "period": "1976-1980",
      "obesity": 15.0,
      "obesity_se": 0.4,
      "overweight": 32.1,
      "overweight_se": 0.6,
      "severe_obesity": 1.4,
      "severe_obesity_se": 0.1,
      "n": 11765
    },
    {
      "period": "1988-1994",
      "obesity": 23.2,
      "obesity_se": 0.7,
      "overweight": 32.6,
      "overweight_se": 0.6,
      "severe_obesity": 3.0,
      "severe_obesity_se": 0.3,
      "n": 14319
    },
    {
      "period": "1999-2000",
      "obesity": 30.9,
      "obesity_se": 1.6,
      "overweight": 33.6,
      "overweight_se": 1.1,
      "severe_obesity": 5.0,
      "severe_obesity_se": 0.6,
      "n": 3603
    },
    {
      "period": "2001-2002",
      "obesity": 31.2,
      "obesity_se": 1.1,
      "overweight": 34.4,
      "overweight_se": 1.1,
      "severe_obesity": 5.4,
      "severe_obesity_se": 0.5,
      "n": 3916
    },
    {
      "period": "2003-2004",
      "obesity": 32.9,
      "obesity_se": 1.3,
      "overweight": 33.4,
      "overweight_se": 1.2,
      "severe_obesity": 5.1,
      "severe_obesity_se": 0.6,
      "n": 3756
    },
    {
      "period": "2005-2006",
      "obesity": 35.1,
      "obesity_se": 1.5,
      "overweight": 32.2,
      "overweight_se": 0.9,
      "severe_obesity": 6.2,
      "severe_obesity_se": 0.5,
      "n": 3835
    },
    {
      "period": "2007-2008",
      "obesity": 34.3,
      "obesity_se": 1.2,
      "overweight": 33.6,
      "overweight_se": 0.8,
      "severe_obesity": 6.0,
      "severe_obesity_se": 0.4,
      "n": 4876
    },
    {
      "period": "2009-2010",
      "obesity": 36.1,
      "obesity_se": 0.9,
      "overweight": 32.7,
      "overweight_se": 1.0,
      "severe_obesity": 6.6,
      "severe_obesity_se": 0.2,
      "n": 5279
    },
    {
      "period": "2011-2012",
      "obesity": 35.3,
      "obesity_se": 1.4,
      "overweight": 33.3,
      "overweight_se": 1.4,
      "severe_obesity": 6.6,
      "severe_obesity_se": 0.6,
      "n": 4674
    },
    {
      "period": "2013-2014",
      "obesity": 38.2,
      "obesity_se": 1.0,
      "overweight": 31.9,
      "overweight_se": 0.8,
      "severe_obesity": 8.1,
      "severe_obesity_se": 0.8,
      "n": 4940
    },
    {
      "period": "2015-2016",
      "obesity": 40.0,
      "obesity_se": 1.8,
      "overweight": 31.0,
      "overweight_se": 0.8,
      "severe_obesity": 8.0,
      "severe_obesity_se": 0.6,
      "n": 4778
    },
    {
      "period": "2017-2018",
      "obesity": 42.8,
      "obesity_se": 1.9,
      "overweight": 30.3,
      "overweight_se": 1.2,
      "severe_obesity": 9.6,
      "severe_obesity_se": 1.0,
      "n": 4536
    },
    {
      "period": "2021-2023",
      "obesity": 40.8,
      "obesity_se": 2.0,
      "overweight": 31.3,
      "overweight_se": 0.9,
      "severe_obesity": 10.2,
      "severe_obesity_se": 0.8,
      "n": 5249,
      "period_label": "August 2021\u2013August 2023"
    }
  ],
  "latest_in_series_note": "Figures show the latest observation period included in this curated series from the cited release\u2014not a claim that no newer unrelated series exists elsewhere."
}