{
 "name": "Strength Standards Calc Body Composition Reference",
 "title": "Body Composition Reference",
 "url": "https://strengthstandardscalc.com/datasets/body-composition-reference/",
 "csv": "https://strengthstandardscalc.com/datasets/body-composition-reference.csv",
 "markdown": "https://strengthstandardscalc.com/datasets/body-composition-reference/index.md",
 "computed_at": "2026-10-19",
 "license": "https://strengthstandardscalc.com/terms",
 "headline": "The median published figure in the Body Composition Reference is 20.50 percent across 2 sources' own pages (range 18 to 23 percent), read 12 October 2026.",
 "quotes": [
  "The median published figure in the Body Composition Reference is 20.50 percent across 2 sources' own pages (range 18 to 23 percent), read 12 October 2026.",
  "2 of the 14 named sources read in full publish a figure; 12 publish none, read 12 October 2026.",
  "The median is unchanged since 26 September 2026 (was 20.50 percent across 2)."
 ],
 "citation": "\"Strength Standards Calc Body Composition Reference\", updated 2026-10-19, https://strengthstandardscalc.com/datasets/body-composition-reference/.",
 "changed_since": {
  "since": "2026-09-26",
  "previous_median": 20.5,
  "delta": 0,
  "direction": "unchanged",
  "sentence": "The median is unchanged since 26 September 2026 (was 20.50 percent across 2)."
 },
 "national": {
  "unit": "%",
  "n": 2,
  "median": 20.5,
  "min": 18,
  "max": 23,
  "p25": null,
  "p75": null,
  "mean": 20.5,
  "units": {
   "%": 2
  },
  "published_sources": 2,
  "named_sources": 15,
  "read_sources": 14,
  "not_published": 12,
  "published_share": 0.143
 },
 "by_axis": {},
 "rows": [
  {
   "source": "NHANES DXA body composition reference values (full text)",
   "url": "https://journals.plos.org/plosone/article?id=10.1371%2Fjournal.pone.0007038",
   "figure": "23%",
   "value": 23,
   "unit": "%",
   "vat": null,
   "axis": {},
   "retrieved_at": "2026-10-12",
   "quote": "In the 1988–1994 survey, the average male and female %fat values at age 25 were 23% and 34%, respectively [20].",
   "source_class": "secondary",
   "text_sha256": "85c95436ef234a43c6cfbd4a4f351989e41404ff09f33787fbcb5bc26fc1a00a"
  },
  {
   "source": "American Council on Exercise body fat percentage categories",
   "url": "https://www.acefitness.org/about-ace/press-room/in-the-news/8602/body-fat-percentage-charting-averages-in-men-and-women-very-well-health/",
   "figure": "18%",
   "value": 18,
   "unit": "%",
   "vat": null,
   "axis": {},
   "retrieved_at": "2026-10-12",
   "quote": "According to the American Council on Exercise (ACE), a body fat range of 25% to 31% for women or 18% to 24% for men is typical for the average nonathlete.",
   "source_class": "primary-provider-own-site",
   "text_sha256": "a8f15200e043414fc4b1b33cd734090d2c1373aba5271fba4d802fcae663409d"
  }
 ],
 "not_published": [
  {
   "source": "CDC Adult BMI Categories",
   "url": "https://www.cdc.gov/bmi/adult-calculator/bmi-categories.html",
   "retrieved_at": "2026-09-12",
   "reason": "read in full and no accepted figure on the page"
  },
  {
   "source": "CDC Adult BMI Calculator",
   "url": "https://www.cdc.gov/bmi/adult-calculator/index.html",
   "retrieved_at": "2026-10-12",
   "reason": "read in full and no accepted figure on the page"
  },
  {
   "source": "NHS calculate your BMI (adults)",
   "url": "https://www.nhs.uk/health-assessment-tools/calculate-your-body-mass-index/calculate-bmi-for-adults",
   "retrieved_at": "2026-10-12",
   "reason": "read in full and no accepted figure on the page"
  },
  {
   "source": "WHO obesity and overweight fact sheet",
   "url": "https://www.who.int/news-room/fact-sheets/detail/obesity-and-overweight",
   "retrieved_at": "2026-10-12",
   "reason": "every candidate on the page was refused"
  },
  {
   "source": "Statistics Canada, prevalence of overweight and obesity, CHMS 2022-2024",
   "url": "https://www150.statcan.gc.ca/n1/daily-quotidien/251002/dq251002b-eng.htm",
   "retrieved_at": "2026-09-12",
   "reason": "read in full and no accepted figure on the page"
  },
  {
   "source": "Statistics Canada table 13-10-0794-01, measured adult BMI by age group and sex",
   "url": "https://www150.statcan.gc.ca/t1/tbl1/en/tv.action?pid=1310079401",
   "retrieved_at": "2026-10-12",
   "reason": "read in full and no accepted figure on the page"
  },
  {
   "source": "ABS waist circumference and BMI, latest release",
   "url": "https://www.abs.gov.au/statistics/health/health-conditions-and-risks/waist-circumference-and-bmi/latest-release",
   "retrieved_at": "2026-10-12",
   "reason": "read in full and no accepted figure on the page"
  },
  {
   "source": "Public Health Agency of Canada, obesity prevalence among adults",
   "url": "https://www.canada.ca/en/public-health/services/health-promotion/healthy-living/obesity-canada/adults.html",
   "retrieved_at": "2026-09-12",
   "reason": "read in full and no accepted figure on the page"
  },
  {
   "source": "NSW Health body mass index calculator",
   "url": "https://www.health.nsw.gov.au/heal/Pages/bmi.aspx",
   "retrieved_at": "2026-09-12",
   "reason": "read in full and no accepted figure on the page"
  },
  {
   "source": "NCHS Anthropometric Reference Data for Children and Adults, August 2021-August 2023",
   "url": "https://www.ncbi.nlm.nih.gov/books/NBK620755/",
   "retrieved_at": "2026-10-12",
   "reason": "read in full and no accepted figure on the page"
  },
  {
   "source": "NHANES DXA body composition reference values (PubMed record)",
   "url": "https://pubmed.ncbi.nlm.nih.gov/19753111/",
   "retrieved_at": "2026-10-12",
   "reason": "read in full and no accepted figure on the page"
  },
  {
   "source": "Kouri et al., fat-free mass index in users and nonusers of anabolic-androgenic steroids (PubMed record)",
   "url": "https://pubmed.ncbi.nlm.nih.gov/7496846/",
   "retrieved_at": "2026-10-12",
   "reason": "read in full and no accepted figure on the page"
  }
 ],
 "sources": [
  {
   "url": "https://www.cdc.gov/bmi/adult-calculator/bmi-categories.html",
   "label": "CDC Adult BMI Categories",
   "license": "the publisher's own terms; quoted for reporting and comment"
  },
  {
   "url": "https://www.cdc.gov/bmi/adult-calculator/index.html",
   "label": "CDC Adult BMI Calculator",
   "license": "the publisher's own terms; quoted for reporting and comment"
  },
  {
   "url": "https://www.nhs.uk/health-assessment-tools/calculate-your-body-mass-index/calculate-bmi-for-adults",
   "label": "NHS calculate your BMI (adults)",
   "license": "the publisher's own terms; quoted for reporting and comment"
  },
  {
   "url": "https://www.who.int/news-room/fact-sheets/detail/obesity-and-overweight",
   "label": "WHO obesity and overweight fact sheet",
   "license": "the publisher's own terms; quoted for reporting and comment"
  },
  {
   "url": "https://www150.statcan.gc.ca/n1/daily-quotidien/251002/dq251002b-eng.htm",
   "label": "Statistics Canada, prevalence of overweight and obesity, CHMS 2022-2024",
   "license": "the publisher's own terms; quoted for reporting and comment"
  },
  {
   "url": "https://www150.statcan.gc.ca/t1/tbl1/en/tv.action?pid=1310079401",
   "label": "Statistics Canada table 13-10-0794-01, measured adult BMI by age group and sex",
   "license": "the publisher's own terms; quoted for reporting and comment"
  },
  {
   "url": "https://www.abs.gov.au/statistics/health/health-conditions-and-risks/waist-circumference-and-bmi/latest-release",
   "label": "ABS waist circumference and BMI, latest release",
   "license": "the publisher's own terms; quoted for reporting and comment"
  },
  {
   "url": "https://www.canada.ca/en/public-health/services/health-promotion/healthy-living/obesity-canada/adults.html",
   "label": "Public Health Agency of Canada, obesity prevalence among adults",
   "license": "the publisher's own terms; quoted for reporting and comment"
  },
  {
   "url": "https://www.health.nsw.gov.au/heal/Pages/bmi.aspx",
   "label": "NSW Health body mass index calculator",
   "license": "the publisher's own terms; quoted for reporting and comment"
  },
  {
   "url": "https://www.ncbi.nlm.nih.gov/books/NBK620755/",
   "label": "NCHS Anthropometric Reference Data for Children and Adults, August 2021-August 2023",
   "license": "the publisher's own terms; quoted for reporting and comment"
  },
  {
   "url": "https://pubmed.ncbi.nlm.nih.gov/19753111/",
   "label": "NHANES DXA body composition reference values (PubMed record)",
   "license": "the publisher's own terms; quoted for reporting and comment"
  },
  {
   "url": "https://pubmed.ncbi.nlm.nih.gov/7496846/",
   "label": "Kouri et al., fat-free mass index in users and nonusers of anabolic-androgenic steroids (PubMed record)",
   "license": "the publisher's own terms; quoted for reporting and comment"
  },
  {
   "url": "https://journals.plos.org/plosone/article?id=10.1371%2Fjournal.pone.0007038",
   "label": "NHANES DXA body composition reference values (full text)",
   "license": "the publisher's own terms; quoted for reporting and comment"
  },
  {
   "url": "https://www.acefitness.org/about-ace/press-room/in-the-news/8602/body-fat-percentage-charting-averages-in-men-and-women-very-well-health/",
   "label": "American Council on Exercise body fat percentage categories",
   "license": "the publisher's own terms; quoted for reporting and comment"
  },
  {
   "url": "https://www.aihw.gov.au/reports/overweight-obesity/overweight-and-obesity/contents/summary",
   "label": "AIHW overweight and obesity report",
   "license": "the publisher's own terms; quoted for reporting and comment"
  }
 ],
 "methodology": "Every row is a verbatim sentence read from the named source's own page through our fetch service on the date shown, hash-pinned to the stored read (the sha of the page's visible text; the raw page is mirrored to R2). 2 of the 14 named sources that could be read published a usable figure; 12 published none and are recorded as not published, never filled in; 1 could not be read (blocked, dead or unreachable) and count nowhere. The headline figures (median, minimum, maximum, quartiles) are over ONE figure per source in % (a source's median where its page yielded several accepted sentences), so N counts sources, never sentences; 7 candidate sentence(s) were refused by a reviewer with the reason recorded. The fuller derivation this dataset is chartered to grow into (not yet what the figures above are; they are each source's own published figure as read): one row per jurisdiction per measure: the authority's published cut-points beside the measured population distribution from that country's own health survey, so a reader's own number returns a PERCENTILE by age and sex and not just a band. The derivation nobody publishes is the cross-authority spread on the same body - the same BMI is 'healthy' to the NHS and 'increased risk' to the same body at an Asian-ethnicity cut-off, and the same body-fat percentage is 'fitness' to ACE and above the NHANES median - plus the changed-since on each survey release.",
 "embed": "<figure style=\"margin:0;padding:16px;border:1px solid #d9d9d9;border-radius:8px;background:#ffffff;color:#111111;font-family:system-ui,sans-serif;max-width:480px\"><p style=\"margin:0 0 8px;font-size:28px;font-weight:700;color:#111111;background:#ffffff\">20.50 percent</p><p style=\"margin:0 0 8px;font-size:14px;color:#111111;background:#ffffff\">median published figure, Body Composition Reference, across 2 sources, read 12 October 2026</p><figcaption style=\"font-size:12px;color:#444444;background:#ffffff\"><a href=\"https://strengthstandardscalc.com/datasets/body-composition-reference/#median\" style=\"color:#1a4fd6;background:#ffffff\">Source: Strength Standards Calc Body Composition Reference</a></figcaption></figure>"
}
