{
  "slug": "lung-cancer",
  "question": "What are the odds of dying from lung cancer?",
  "category": "cancer",
  "no_reliable_estimate": false,
  "perceived": {
    "description": "Lung cancer is one of the few cancer sites where the public’s mental model is close to right: most adults correctly file it as \"the one that smoking causes\", and most adults correctly file it as one of the big killers. Decades of warning labels, anti-smoking campaigns, and visible clinical consequences have done their job at the qualitative level. What the typical reader does not usually internalise is the specific gap between the smoker and never-smoker lifetime numbers — roughly two orders of magnitude — or the fact that lung cancer in lifelong never-smokers, while much rarer per capita, is still responsible for a non-trivial share of the global death total through radon, occupational exposures, air pollution, and genetic mutations.\n",
    "rough_estimate": "50% of US adults are very or somewhat worried about getting cancer (Gallup, all sites); 36% specifically worry about being diagnosed (Prevent Cancer Foundation)",
    "kind": "survey",
    "survey_source": {
      "title": "Cancer, Heart Disease Worries Eclipse COVID-19",
      "publisher": "Gallup",
      "url": "https://news.gallup.com/poll/358070/cancer-heart-disease-worries-eclipse-covid.aspx",
      "year": 2021
    }
  },
  "native": {
    "display": "~1.8 million lung cancer deaths per year globally (~1 in 5 of all cancer deaths)",
    "numerator": 1,
    "denominator": 4400,
    "unit": "per year",
    "population": "global, all ages, trachea/bronchus/lung cancer"
  },
  "normalized": {
    "lifetime_us_adult": 0.018,
    "display": "1 in ~55 lifetime (global adult)",
    "log_value": -1.74,
    "assumptions": "Uses the IARC GLOBOCAN 2022 estimate of ~1.8 million lung cancer deaths per year globally (18.7% of all cancer deaths, making it the #1 cancer killer worldwide) as the canonical annual mortality figure. Across a global adult population of ~6.0 billion (age 18+), that is an annual per-adult rate of ~0.30 per 1,000 adults per year. Compounded naively over 60 years of remaining adult life: 1 − (1 − 0.00030)^60 ≈ 0.018, or roughly 1 in 55 lifetime. That is a floor rather than a ceiling because lung cancer mortality is heavily age-concentrated in the 60-80 band and the naive compounding treats risk as age-flat. Age-weighting pulls the realistic global figure slightly higher, but competing mortality (infectious disease, injury, maternal causes in LMICs) pulls it back down, so 0.018 sits at a defensible global mid-point. The direct US lifetime figures from the American Cancer Society are higher — 3.7% for men (1 in 27) and 3.5% for women (1 in 29) — reflecting higher historical smoking prevalence and lower competing mortality. Headline figure 0.018 (≈ 1 in 55) with an uncertainty band of 0.012-0.037 to span the global-adult to US-adult range. Scope is global-adult-lifetime to match the cancer-lifetime sibling entry; site-specific multipliers in personal_factor_multipliers show how much this number moves for smokers vs never-smokers.\n",
    "uncertainty": {
      "low": 0.012,
      "high": 0.037
    },
    "scope": "global_adult_lifetime"
  },
  "sources": [
    {
      "url": "https://www.iarc.who.int/news-events/new-report-on-global-cancer-burden-in-2022-by-world-region-and-human-development-level/",
      "title": "New report on global cancer burden in 2022 by world region and human development level",
      "publisher": "International Agency for Research on Cancer (IARC) / World Health Organization",
      "source_type": "govt_report",
      "statistic": "Lung cancer was the leading cause of cancer death globally in 2022, with an estimated 1.8 million deaths (18.7% of all cancer deaths), and the most frequently diagnosed cancer with 2.5 million new cases (12.4% of all cancers)",
      "excerpt": "\"Lung cancer was the most frequently diagnosed cancer in 2022 – representing almost 2.5 million new cases, or one in eight cancers, worldwide (12.4% of all cancers globally). Lung cancer was also the leading cause of cancer death, being responsible for an estimated 1.8 million deaths (18.7%).\"\n",
      "source_date": "2024-04-04",
      "source_accessed": "2026-04-11",
      "archive_url": "http://web.archive.org/web/20260323181222/https://www.iarc.who.int/news-events/new-report-on-global-cancer-burden-in-2022-by-world-region-and-human-development-level/",
      "calculation_notes": "GLOBOCAN 2022 reports ~1.8 million global lung cancer deaths. Across ~6.0 billion adults (age 18+), that is ~0.30 per 1,000 adults per year. Naive 60-year compounding: 1 − (1 − 3.0e-4)^60 ≈ 0.018, or ~1 in 55 lifetime. Used as the primary global headline and for the \"#1 cancer killer\" framing in the body text. Lung cancer’s 18.7% share of cancer deaths is larger than any other single cancer site, beating out colorectal, liver, breast, and stomach.\n",
      "independence_note": "IARC GLOBOCAN is the upstream dataset that WHO, ACS international comparisons, and the IHME Global Burden of Disease cancer module all draw from. Treat this source and the WHO lung cancer fact sheet below as partially dependent: they agree because WHO republishes IARC headline numbers.\n"
    },
    {
      "url": "https://www.who.int/news-room/fact-sheets/detail/lung-cancer",
      "title": "Lung cancer — fact sheet",
      "publisher": "World Health Organization",
      "source_type": "govt_report",
      "statistic": "Lung cancer is the leading cause of cancer death globally; 60-70% of preventable cases are attributable to tobacco smoking",
      "excerpt": "\"More than 1.3 million cases in men and nearly 500 000 lung cancer cases in women are preventable, with the majority attributable to tobacco smoking (60–70%), followed by air pollution and occupational exposure.\"\n",
      "source_date": "2023-06-26",
      "source_accessed": "2026-04-26",
      "archive_url": "https://web.archive.org/web/20260413174815/https://www.who.int/news-room/fact-sheets/detail/lung-cancer",
      "calculation_notes": "WHO states 60-70% of preventable lung cancer cases are attributable to tobacco smoking — not 85% of all cases. The \"85%\" figure on the WHO page refers to non-small-cell lung cancer’s share of all lung cancer histological types, not smoking attribution. The CDC’s US-specific figure of 80-90% of lung cancer deaths linked to smoking (source 5 below) is the appropriate anchor for the US smoking-attribution fraction. The 60-70% WHO global figure is lower partly because it refers to preventable cases (not deaths) and partly because global smoking prevalence is lower than historical US rates.\n",
      "independence_note": "WHO lung cancer fact sheet republishes IARC/GLOBOCAN headline numbers; same upstream data pipeline as the first source. Included as the authoritative institutional endorsement of the smoking-attribution figure rather than as independent verification of the death count.\n"
    },
    {
      "url": "https://www.cancer.org/cancer/risk-prevention/understanding-cancer-risk/lifetime-probability-of-developing-or-dying-from-cancer.html",
      "title": "Lifetime Probability of Developing or Dying From Cancer",
      "publisher": "American Cancer Society",
      "source_type": "reputable_reference",
      "statistic": "US lifetime probability of dying from lung and bronchus cancer: 3.7% for men (≈ 1 in 27), 3.5% for women (≈ 1 in 29)",
      "excerpt": "\"Lung and bronchus [mortality]: Men 3.7% (1 in 27); Women 3.5% (1 in 29).\"\n",
      "source_date": "2025-01-30",
      "source_accessed": "2026-04-11",
      "archive_url": "https://web.archive.org/web/20260413164427/https://www.cancer.org/cancer/risk-prevention/understanding-cancer-risk/lifetime-probability-of-developing-or-dying-from-cancer.html",
      "calculation_notes": "ACS uses SEER mortality data (2020-2022) to compute direct lifetime probabilities from a life-table conditional on birth. These are methodologically the gold standard for \"direct\" lifetime risk and anchor the US row in regional_breakdown. Note that these figures are averaged across US smokers and never-smokers; the smoker-only figure is an order of magnitude higher, and the never-smoker figure is an order of magnitude lower. The US number sits above the global adult figure of ~1.8% mainly because historical US smoking prevalence was high and because competing mortality in LMICs removes adults from the denominator before they reach peak lung-cancer-risk age.\n",
      "independence_note": "SEER (NCI) and IARC (WHO) are independent compilation pipelines — SEER is US-only vital registration and population-based cancer registries, IARC aggregates national registry data worldwide. Comparing the two anchors the global-vs-US gap in this entry’s regional_breakdown.\n"
    },
    {
      "url": "https://www.cancer.org/cancer/types/lung-cancer/about/key-statistics.html",
      "title": "Key Statistics for Lung Cancer",
      "publisher": "American Cancer Society",
      "source_type": "reputable_reference",
      "statistic": "Lung cancer is by far the leading cause of cancer death in the US, accounting for about 1 in 5 of all cancer deaths; ~125,000 US lung cancer deaths per year (63,040 men, 61,950 women in the 2026 projection); lifetime chance of developing lung cancer ~1 in 19",
      "excerpt": "\"Lung cancer is by far the leading cause of cancer death in the US, accounting for about 1 in 5 of all cancer deaths. [...] About 124,990 deaths from lung cancer (63,040 in men and 61,950 in women). [...] Overall, the chance that a person will develop lung cancer in their lifetime is about 1 in 19.\"\n",
      "source_date": "2026-01-16",
      "source_accessed": "2026-04-11",
      "archive_url": "https://web.archive.org/web/20260413174919/https://www.cancer.org/cancer/types/lung-cancer/about/key-statistics.html",
      "calculation_notes": "The \"about 1 in 5 of all cancer deaths\" framing is the plain-English headline used in the body text: lung cancer kills more Americans each year than colon, breast, and prostate cancers combined. ~125,000 US lung cancer deaths / ~260 million US adults ≈ 0.48 per 1,000 adults per year, compounded over 60 adult years: 1 − (1 − 4.8e-4)^60 ≈ 0.028, or about 2.8% — higher than the global ~1.8% but lower than the sex-specific ACS direct lifetime figures (which include pre-adult exposure and more complete age weighting). Used for the \"1 in 5 cancer deaths\" framing and as the annual US aggregate anchor.\n",
      "independence_note": "ACS Key Statistics and ACS Lifetime Probability page share the same SEER upstream. Treated as a single institutional pipeline for the US-specific figures.\n"
    },
    {
      "url": "https://www.cdc.gov/lung-cancer/risk-factors/index.html",
      "title": "Lung Cancer Risk Factors",
      "publisher": "US Centers for Disease Control and Prevention",
      "source_type": "govt_report",
      "statistic": "In the United States, cigarette smoking is linked to about 80% to 90% of lung cancer deaths; indoor radon is another important cause",
      "excerpt": "\"In the United States, cigarette smoking is linked to about 80% to 90% of lung cancer deaths. [...] Indoor radon is another important cause of lung cancer in the United States. [...] The risk of lung cancer from radon exposure is higher for people who smoke than for people who don’t smoke.\"\n",
      "source_date": "2024-07-22",
      "source_accessed": "2026-04-11",
      "archive_url": "https://web.archive.org/web/20260413174957/https://www.cdc.gov/lung-cancer/risk-factors/index.html",
      "calculation_notes": "CDC’s \"80% to 90%\" US attribution is the domestic anchor for the smoking multiplier and the never-smoker baseline. Combined with the ACS 125,000 annual US lung cancer death figure, that implies ~100,000-112,000 US smoking-attributable lung cancer deaths per year. The remaining ~13,000-25,000 include radon (EPA estimates ~21,000 total radon-attributable lung cancer deaths per year, with ~2,900 among never-smokers), occupational asbestos and diesel exhaust, air pollution, and a residual genetic/idiopathic background.\n",
      "independence_note": "CDC draws on SAMMEC (Smoking-Attributable Mortality, Morbidity, and Economic Costs) and on Cancer Prevention Study II hazard ratios, partially overlapping with the ACS/SEER upstream but with independent attribution methodology.\n"
    },
    {
      "url": "https://www.epa.gov/radon/health-risk-radon",
      "title": "Health Risk of Radon",
      "publisher": "US Environmental Protection Agency",
      "source_type": "govt_report",
      "statistic": "Radon is the second leading cause of lung cancer in the US and the leading cause in never-smokers; ~21,000 radon-related lung cancer deaths per year, including ~2,900 in never-smokers",
      "excerpt": "\"Radon is the number one cause of lung cancer among non-smokers [...] radon is the second leading cause of lung cancer. [...] Radon is responsible for about 21,000 lung cancer deaths every year. [...] About 2,900 of these deaths occur among people who have never smoked.\"\n",
      "source_date": "2024-06-12",
      "source_accessed": "2026-04-11",
      "archive_url": "https://web.archive.org/web/20260413175035/https://www.epa.gov/radon/health-risk-radon",
      "calculation_notes": "EPA radon figures are used as the basis for the \"radon exposure\" personal factor multiplier and for the body text on never-smoker lung cancer. ~2,900 never-smoker radon deaths across ~180 million US never-smoker adults implies a baseline annual rate on the order of 0.016 per 1,000, which compounds over 60 years to ~0.1% — small in absolute terms but non-trivial and actionable through home radon testing. The multiplicative interaction between radon and smoking is the classical Darby et al. 2005 BMJ pooled analysis finding.\n",
      "independence_note": "EPA radon estimates are based on the BEIR VI National Research Council model and on independent environmental sampling — methodologically independent of the ACS/SEER cancer mortality pipeline.\n"
    }
  ],
  "comparison_anchors": [
    {
      "label": "Death from cancer (lifetime, global adult, all sites)",
      "lifetime_us_adult": 0.14
    },
    {
      "label": "Death from a smoking-related disease (lifelong regular smoker)",
      "lifetime_us_adult": 0.5
    },
    {
      "label": "Death from ischaemic heart disease (lifetime, global adult)",
      "lifetime_us_adult": 0.085
    },
    {
      "label": "Death from stroke (lifetime, global adult)",
      "lifetime_us_adult": 0.067
    },
    {
      "label": "Death in a car crash (lifetime, US)",
      "lifetime_us_adult": 0.0108
    },
    {
      "label": "Death in a plane crash (lifetime, US adult, regular flyer)",
      "lifetime_us_adult": 0.000017
    }
  ],
  "regional_breakdown": [
    {
      "region": "Global average",
      "probability": 0.018,
      "notes": "~1.8M lung cancer deaths/yr across ~6B adults (IARC GLOBOCAN 2022); compounded over 60 adult years"
    },
    {
      "region": "United States (men)",
      "probability": 0.037,
      "notes": "ACS direct lifetime estimate from SEER 2020-2022 mortality data; 1 in 27"
    },
    {
      "region": "United States (women)",
      "probability": 0.035,
      "notes": "ACS direct lifetime estimate from SEER 2020-2022 mortality data; 1 in 29"
    },
    {
      "region": "East Asia (high male smoking prevalence)",
      "probability": 0.04,
      "notes": "China, Indonesia, and several other East/Southeast Asian countries have male smoking prevalence well above the OECD median; lung cancer is the #1 cancer killer in China by a wide margin"
    },
    {
      "region": "High-radon US region (home level 4+ pCi/L)",
      "probability": 0.06,
      "notes": "EPA action level; multiplicative interaction with smoking pulls the smoker rate sharply higher and adds meaningful risk even for never-smokers"
    }
  ],
  "personal_factor_multipliers": [
    {
      "factor": "current heavy smoker (20+/day, lifelong)",
      "multiplier": 23,
      "notes": "Male lifelong heavy smoker vs never-smoker. Female relative risk is slightly lower (~13x). This is the single largest modifiable cancer risk factor anywhere on this site and the reason 60-70% of preventable global lung cancer cases (WHO) and 80-90% of US lung cancer deaths (CDC) are smoking-attributable despite smokers being a minority of the adult population."
    },
    {
      "factor": "former smoker, quit 20+ years ago",
      "multiplier": 2,
      "notes": "Residual elevation above never-smoker baseline declines for decades after cessation but never fully reaches it; see Jha NEJM 2013 and Doll 2004 for the quitting-age gradient"
    },
    {
      "factor": "never-smoker",
      "multiplier": 0.55,
      "notes": "Background lung cancer death risk in lifelong never-smokers is ~1 in 100 lifetime (~0.01, roughly 0.55x the 1-in-55 population headline). Small relative to smokers but still substantial in absolute terms — driven mainly by radon, secondhand smoke, occupational exposures, air pollution, and genetic mutations (EGFR-mutant adenocarcinoma is enriched in never-smokers, especially East Asian women). Note: the earlier multiplier of 0.05 in this field was a factor-of-10 arithmetic error caught in the Codex review pass and corrected here."
    },
    {
      "factor": "radon exposure (home 4+ pCi/L, EPA action level)",
      "multiplier": 1.5,
      "notes": "Dose-response relationship established by Darby et al. 2005 BMJ pooled European analysis and by BEIR VI. Effect is larger in absolute terms for smokers because radon and smoking interact roughly multiplicatively."
    },
    {
      "factor": "occupational asbestos exposure + smoking",
      "multiplier": 50,
      "notes": "Hammond/Selikoff classical finding: asbestos and smoking interact multiplicatively, not additively. Asbestos alone raises lung cancer risk ~5x; smoking alone ~10-20x; together ~50x. One of the most-cited synergistic exposures in occupational epidemiology."
    },
    {
      "factor": "first-degree family history of lung cancer",
      "multiplier": 1.8,
      "notes": "Modest elevation after controlling for shared smoking exposure; reflects both inherited susceptibility and shared environment"
    }
  ],
  "short_label": "Lung cancer",
  "myth_framing": "calibrated",
  "outcome_severity": "fatal",
  "exposure_pattern": "recurring",
  "outcome_type": "chronic_illness",
  "valence": "negative",
  "caveats": "Lung cancer is the rare entry where the aggregate headline and the individual personal-factor adjustment are both load-bearing — and the gap between them is enormous. A lifelong heavy smoker and a lifelong never-smoker differ in lung cancer mortality risk by roughly two orders of magnitude, which is larger than the spread between almost any pair of entries on this site. The ~1 in 55 global headline is an average across a population where ~20% of adults are current smokers and the rest mostly aren’t; it is not a personal forecast for anyone in particular. The regular-smoking-death entry is the meta-entry for the smoker side of this distribution; this page shows how much of that aggregate flows specifically through lung cancer (answer: roughly 80-90% of the lung cancer share, and a meaningful fraction of the total). Site-specific cancer entries for breast, colorectal, prostate, pancreatic, and liver will follow, each with their own very different risk profiles. Lung cancer in never-smokers is itself a growing fraction of cases in some high-income countries as historical smoking cohorts age out, and is the subject of active research into air pollution, EGFR-mutant adenocarcinoma, and radon-attributable disease. Home radon testing is one of the few cost-effective individual interventions with a direct causal link to lung cancer mortality reduction.\n",
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