Series Index detectlead.com

Working index of the lead research and commentary series. Updated as pages are added.

Health Research Evidence
/pages/lead-heart-disease
Lead and Heart Disease: The Evidence That Changes Everything
  • Lanphear 2018 (Lancet): ~400,000 US deaths/year attributed to lead, mostly cardiovascular
  • 2.5x higher cardiovascular mortality in the top vs. bottom blood lead quartile (NHANES III)
  • Argues heart disease treatment has been addressing downstream effects while ignoring lead as an upstream cause
  • Connects daily dishware use to ongoing cardiovascular lead burden
/pages/lead-dementia
Lead Exposure and Dementia: What the 2026 NHANES Research Found
  • Longer-form research writeup of Wang et al. 2026 (Alzheimer's & Dementia journal)
  • 14,000-person NHANES cohort tracked up to 30 years; patella bone lead measured
  • 2.96x Alzheimer's risk in the highest vs. lowest bone lead quartile
  • 18% of U.S. dementia cases attributable to excess bone lead accumulation
/pages/lead-dementia-b
Your Dishes May Be Tripling Your Alzheimer's Risk — New 2026 Research
  • More accessible version of the dementia research page, built for broad reach
  • Same Wang et al. 2026 study; walks through the dish-to-blood-to-brain pathway step by step
  • Stronger call to action; links to dish testing
/pages/lead-grandkid-table
Your Dishes Are What Your Grandchildren Eat Off. The Data Is Not Subtle.
  • NHANES I-III + Nevin 2007 + Lanphear 2005: children absorb 5x as much lead as adults from the same source
  • 23-year lag between childhood lead exposure peak and violent crime peak in the data
  • Grandparent homes as the overlooked link — older dishware in regular use, young children visiting
/pages/lead-cohort-preview
Lead Cohort Series — Preview (hidden, not nav-linked)
  • Day-1 preview of the full lead cohort series — four modules: foundation chart, IQ/Lead Mode (Figueroa 2024), processing speed test, cognitive quick screen
  • Foundation chart: tetraethyl lead in gasoline (1925–1996) overlaid with US children's mean blood lead — same chemical, not a coincidence
  • Urban/Black kids in NHANES II (1976–80) averaged 6–10x the current CDC reference value
/pages/lead-mexico-study
Mexico Lost $33 Billion to Childhood Lead Last Year — Figueroa 2024 Breakdown
  • Figueroa 2024: nationally representative analysis of Mexican children 1–4, lead exposure cost 2.76% of Mexico's 2019 GDP in lost lifetime productivity
  • 4.14 average IQ points lost per child nationally; Chiapas (lowest HDI) lost 7.08% of state GDP vs 0.86% in Mexico City
  • Mechanism: lead lowers IQ, lower IQ = lower lifetime earnings, worst effects concentrated where cognitive headroom is already lowest
Lead by Condition Primary Source
/pages/lead-by-disease
Lead by Disease — Every Condition Lead Causes, Indexed
  • Master index page: every disease lead causes, each with headline number and link to full primary-source breakdown
  • Covers cognitive, behavioral, mood, cardiovascular, skeletal, and exposure-source categories
  • Hub for the individual condition pages below
/pages/lead-iq-loss
Lead Removed 824 Million IQ Points from the US Population — PNAS 2022
  • McFarland et al. 2022 (PNAS): 53% of living Americans had childhood blood lead above 5 µg/dL
  • Cumulative cost: 824 million IQ points lost across the population
  • Worst cohort: 1966–1970, average 5.9 IQ points lost per person across ~21 million Americans
/pages/lead-adhd
Childhood Lead Exposure Quadruples ADHD Risk — Braun NHANES + Mendelian Causation
  • Braun 2006 NHANES: children in highest blood lead quintile had 4.1x adjusted odds of ADHD diagnosis
  • Nigg 2016 (OHSU) Mendelian randomization: confirmed causal, not just correlational
  • Dose-response: 1.2x ADHD odds per each additional 1 µg/dL blood lead
/pages/lead-depression-anxiety
Lead Doubles Depression Risk. Quintuples Panic Disorder. — Bouchard 2009 NHANES
  • Bouchard et al. 2009 (Archives of General Psychiatry): highest blood lead quintile vs lowest in young US adults
  • 2.3x odds of major depression, 4.9x odds of panic disorder — at a mean blood lead of just 1.6 µg/dL
  • "The mental health epidemic in the United States is not in the head. Some of it is in the bloodstream."
/pages/lead-bone-osteoporosis
Lead Lowers Lumbar Spine Bone Density — Zabihi 2025 + NHANES
  • 2025 case-control study: 35 lead-poisoned patients vs 35 controls; hip BMD unaffected, lumbar spine (L1-L4) significantly lower
  • 0.85 vs 0.96 g/cm² lumbar BMD — lead-poisoned vs healthy controls
  • 94% of body lead is stored in bone with a 25–30 year half-life; spine shows damage before hip does
/pages/lead-water-service-lines
Lead Service Lines Raise Infant Blood Lead 1.6x — Balza 2025 JAMA Network Open
  • 1,210 Milwaukee infants under 12 months: lead service line raised odds of BLL ≥3.5 µg/dL by 1.6x adjusted, 2.26x at 5 µg/dL cutoff
  • CDC doesn't recommend blood lead screening until age 1 — by which point formula reconstituted with tap water has already done the damage
  • 9.2 million service lines still in use nationally
/pages/lead-historical
Modern Bone Lead Is 1,000x the Pre-Industrial Baseline — Patterson 1987
  • Clair Patterson (the geochemist who dated the Earth) compared bone lead in pre-industrial Peruvians, ancient Romans, and modern humans
  • Modern bodies carry roughly 1,000x the natural background level — this is industrial pollution, not nature
  • 5,000 years of lead smelting in the baseline; the 20th century is the spike
/pages/lead-hypertension
Lead Raises Blood Pressure Even at Low Levels — Navas-Acien Circulation 2007
  • Meta-analysis of 31 studies: consistent dose-response between blood lead and blood pressure down to modern exposure levels
  • Bone lead (lifetime accumulation) is a stronger hypertension predictor than blood lead — exposure from 50 years ago still driving current risk
  • 1.5x odds of hypertension per doubling of blood lead (NHANES)
/pages/lead-kidney-disease
Lead Drives Chronic Kidney Disease at Any Blood Lead Level — Lin NEJM 2003
  • Lin 2003 RCT (NEJM): chelation therapy slowed CKD progression even at blood lead levels considered "safe"
  • NHANES dose-response confirmed: blood lead associated with reduced GFR across the full US population
  • Kidney function is one of the most robust biomarkers of cumulative lifetime lead exposure
/pages/lead-pregnancy-miscarriage
Lead Doubles Spontaneous Abortion Risk — Borja-Aburto Mexico City Cohort
  • 668 Mexico City women tracked prospectively: each 5 µg/dL blood lead increase = 1.8x spontaneous abortion risk
  • Lead crosses the placenta freely; bone lead mobilized during pregnancy is the dominant source
  • Also linked to preterm birth, reduced birth weight, elevated cord blood lead in infant
/pages/lead-fertility
Lead Damages Fertility in Both Sexes — Sperm Count, Ovulation, IVF
  • Men: reduced sperm count, motility, DNA damage, lower IVF success rates at elevated blood lead
  • Women: menstrual irregularity, longer time-to-pregnancy, reduced ovarian reserve
  • Dose-response curves extend below current occupational exposure thresholds
/pages/lead-cancer
IARC Classifies Inorganic Lead as a Probable Human Carcinogen
  • IARC Group 2A classification since 2006 — strongest evidence for stomach, lung, and brain cancers
  • Based on consistent findings in occupational cohorts + animal evidence + DNA damage / oxidative stress mechanism
  • Most patients have never heard about the classification
/pages/lead-diabetes
Blood Lead Linked to Type 2 Diabetes Risk — NHANES Evidence
  • 1.6x T2D prevalence in highest blood lead quartile vs lowest; dose-response with HbA1c confirmed
  • Mechanism: lead-induced pancreatic beta-cell stress + peripheral insulin resistance via mitochondrial dysfunction
  • Effects detectable at blood lead levels common in the modern US population
/pages/lead-immune
Lead Suppresses Immune Function and Skews Toward Autoimmunity — Dietert 2010
  • Reduced antibody response to vaccines (~40% lower in exposed children), Th2 skewing (pro-allergic), elevated autoantibody prevalence
  • 1.4x asthma prevalence per doubling of blood lead
  • Immune signature of childhood lead exposure persists into adulthood
/pages/lead-earnings-loss
How Lead Cost Americans Trillions in Lifetime Earnings
  • Salkever 1995: each IQ point lost in childhood reduces lifetime earnings by ~2%
  • Applied to 170M Americans with childhood BLL above 5 µg/dL — cumulative US earnings loss runs into the trillions
  • Companion to the Mexico $33B GDP study; same methodology, US scale
/pages/lead-personality
Lead Lowers Agreeableness and Conscientiousness, Raises Neuroticism — 1.5M-Person Study
  • Schwaba et al. 2021 (PNAS): 1.5 million participants across 269 US counties and 37 European nations
  • Higher childhood atmospheric lead = lower adult agreeableness, lower conscientiousness, higher neuroticism
  • 1970 Clean Air Act provided the natural experiment confirming causal direction