Krystal Pollitt, PhD, P.Eng.
Associate Professor of Epidemiology (Environmental Health)Cards
Additional Titles
Affiliated Faculty, Yale Institute for Global Health
Contact Info
Environmental Health Sciences
60 College Street
New Haven, CT 06510
United States
About
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Titles
Associate Professor of Epidemiology (Environmental Health)
Affiliated Faculty, Yale Institute for Global Health
Biography
My research applies exposomic approaches to investigate the influence of environmental factors on disease. Robust, reliable, reproducible, and rigorous analytical and computational techniques are required to operationalise the exposome framework for application in population studies. My work has focused on addressing the technical hurdles of performing systematic and comprehensive measurements of environmental chemicals using high resolution mass spectrometry. My research team has pioneered technologies for exposomics, including a wearable passive sampler (Fresh Air wristband) to assess personal exposure to thousands of contaminants in the environment, including pesticides and phthalates, and software for non-targeted analysis (FluoroMatch) to expand coverage of emerging chemicals in environmental and biological matrices.
Appointments
Environmental Health Sciences
Associate Professor on TermPrimaryChemical and Environmental Engineering
Associate Professor on TermSecondary
Other Departments & Organizations
Education & Training
- Canadian Thoracic Society Post-Doctoral Research Fellow
- University of Toronto (2014)
- PhD
- King's College London, Environmental Toxicology (2012)
- MSc
- University of Toronto, Chemical Engineering (2008)
- BSc
- University of Toronto, Chemical Engineering (2005)
Research
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Overview
My research applies exposomic approaches to investigate the influence of environmental factors on disease. Robust, reliable, reproducible, and rigorous analytical and computational techniques are required to operationalise the exposome framework for application in population studies. My work has focused on addressing the technical hurdles of performing systematic and comprehensive measurements of environmental chemicals using high resolution mass spectrometry. My research team has pioneered technologies for exposomics, including a wearable passive sampler (Fresh Air wristband) to assess personal exposure to thousands of contaminants in the environment, including pesticides and phthalates, and software for non-targeted analysis (FluoroMatch) to expand coverage of emerging chemicals in environmental and biological matrices.
Medical Research Interests
Public Health Interests
ORCID
0000-0001-7332-2228- View Lab Website
Pollitt Lab
Research at a Glance
Yale Co-Authors
Publications Timeline
Research Interests
Jeremy P. Koelmel
Nicole Deziel, PhD, MHS
Caroline Helen Johnson, PhD
Jodi Sherman, MD
Richard A Martinello, MD
Xiaoming Shi
Environmental Exposure
Air Pollution
Exposome
Mass Spectrometry
Publications
2025
Guidance on minimum information requirements (MIR) from designing to reporting human biomonitoring (HBM)
Zare Jeddi M, Galea K, Ashley-Martin J, Nassif J, Pollock T, Poddalgoda D, Kasiotis K, Machera K, Koch H, López M, Chung M, Kil J, Jones K, Covaci A, Ait Bamai Y, Fernandez M, Kase R, Louro H, Silva M, Santonen T, Katsonouri A, Castaño A, Quirós-Alcalá L, Lin E, Pollitt K, Virgolino A, Scheepers P, Melnyk L, Mustieles V, Cañas Portilla A, Viegas S, von Goetz N, Sepai O, Bird E, Göen T, Fustinoni S, Ghosh M, Dirven H, Kwon J, Carignan C, Mizuno Y, Ito Y, Xia Y, Nakayama S, Makris K, Parsons P, Gonzales M, Bader M, Dusinska M, Menouni A, Duca R, Chbihi K, Jaafari S, Godderis L, van Nieuwenhuyse A, Qureshi A, Ali I, Trindade C, Teixeira J, Bartonova A, Tranfo G, Audouze K, Verpaele S, LaKind J, Mol H, Bessems J, Magagna B, Waras M, Connolly A, Nascarella M, Yang W, Huang P, Lee J, Heussen H, Goksel O, Yunesian M, Yeung L, Souza G, Vekic A, Haynes E, Hopf N. Guidance on minimum information requirements (MIR) from designing to reporting human biomonitoring (HBM). Environment International 2025, 202: 109601. PMID: 40609511, DOI: 10.1016/j.envint.2025.109601.Peer-Reviewed Original ResearchCitationsAltmetricConceptsHuman biomonitoring dataHuman biomonitoringRisk of human exposureMinimum information requirementsBiomarkers of exposureChemical exposure assessmentHuman biomonitoring studiesSources of exposureEffective communication of resultsInformation requirementsProtect public healthHealth professionalsHuman exposureBiomonitoringCommunication of resultsExposure assessmentGeneral populationIntegrating exposomics into biomedicine
Miller G, Bennett L, Balshaw D, Barouki R, Bhutani G, Dolinoy D, Gao P, Jett D, Karagas M, Klánová J, Lein P, Li S, Metz T, Patel C, Pollitt K, Rajasekar A, Sillé F, Thessen A, Thuault-Restituito S, Vermeulen R, Ward-Caviness C, Wright R. Integrating exposomics into biomedicine. Science 2025, 388: 356-358. PMID: 40273259, DOI: 10.1126/science.adr0544.Peer-Reviewed Original ResearchCitationsAltmetricMeSH Keywords and ConceptsFluoroMatch IM: An Interactive Software for PFAS Analysis by Ion Mobility Spectrometry
Smolinski R, Koelmel J, Stelben P, Weil D, Godri D, Schiessel D, Kummer M, Stow S, Mohsin S, Royer L, McKenzie-Coe A, Lubinsky T, DeBord D, Chevallier O, Rennie E, Pollitt K, McDonough C. FluoroMatch IM: An Interactive Software for PFAS Analysis by Ion Mobility Spectrometry. Environmental Science And Technology 2025, 59: 6636-6648. PMID: 40133053, PMCID: PMC11984190, DOI: 10.1021/acs.est.4c13846.Peer-Reviewed Original ResearchCitationsAltmetricMeSH Keywords and ConceptsConceptsCollision cross-sectionsNontargeted analysisAccurate mass matchingMass defect filteringIon mobility spectrometryHigh-resolution mass spectrometryPolyfluoroalkyl substance analysisPolyfluoroalkyl substancesMobility spectrometryDefect filteringNontargeted workflowsIon mobilityWastewater samplesMass matchingMass spectrometryPFAS analysisTrace levelsTarget annotationsComplex mixturesAnalytical chemistsIonsSpectrometryStandard mixEnvironmental samplesChemistsExposure to per‐ and polyfluoroalkyl substances in residential settled dust and risk of childhood acute lymphoblastic leukemia
Metayer C, Morimoto L, Vieira V, Pollitt K, Bartell S, Wong L, Young T. Exposure to per‐ and polyfluoroalkyl substances in residential settled dust and risk of childhood acute lymphoblastic leukemia. International Journal Of Cancer 2025, 157: 103-115. PMID: 39950710, PMCID: PMC12062923, DOI: 10.1002/ijc.35370.Peer-Reviewed Original ResearchCitationsAltmetricConceptsGeneralized additive modelPolyfluoroalkyl substancesPerfluoro-1-octanesulfonateAssociated with childhood acute lymphoblastic leukemiaPFAS mixtureChildhood ALLPerfluoro-n-hexanoic acidPolyfluoroalkyl substances concentrationsChildhood acute lymphoblastic leukemiaIndividual PFASLimit of quantificationAcute lymphoblastic leukemiaExposure to per-G-computationNegative weightsRisk of childhood acute lymphoblastic leukemiaResidential dustFilling the Gaps in PFAS Detection: Integrating GC-MS Non-Targeted Analysis for Comprehensive Environmental Monitoring and Exposure Assessment
Newton S, Bowden J, Charest N, Jackson S, Koelmel J, Liberatore H, Lin A, Lowe C, Nieto S, Pollitt K, Robuck A, Rostkowski P, Townsend T, Wallace M, Williams A. Filling the Gaps in PFAS Detection: Integrating GC-MS Non-Targeted Analysis for Comprehensive Environmental Monitoring and Exposure Assessment. Environmental Science & Technology Letters 2025, 12: 104-112. PMID: 40206203, PMCID: PMC11977685, DOI: 10.1021/acs.estlett.4c00930.Peer-Reviewed Original ResearchCitationsAltmetricConceptsNon-target analysisLC-ESI-MSLC-MSNovel PFASsChromatography-mass spectrometryNTA studiesGC-MSTransformation productsPFAS structuresPFAS chemistryLiquid chromatography-mass spectrometryPolyfluoroalkyl substancesGC-MS methodPFAS researchGas chromatography-mass spectrometryLC-MS analysisChemical spaceParent compoundAqueous filmSpectrometryPFAS detectionsChemicalSources of PFASsCompoundsChemistry
2024
Expanding PFAS Identification with Transformation Product Libraries: Nontargeted Analysis Reveals Biotransformation Products in Mice
Liu S, Dukes D, Koelmel J, Stelben P, Finch J, Okeme J, Lowe C, Williams A, Godri D, Rennie E, Parry E, McDonough C, Pollitt K. Expanding PFAS Identification with Transformation Product Libraries: Nontargeted Analysis Reveals Biotransformation Products in Mice. Environmental Science And Technology 2024, 59: 119-131. PMID: 39704186, PMCID: PMC12097807, DOI: 10.1021/acs.est.4c07750.Peer-Reviewed Original ResearchCitationsAltmetricMeSH Keywords and ConceptsConceptsMass spectral libraryTransformation productsLiquid chromatography-high resolution mass spectrometryProduct libraryPolyfluoroalkyl substancesBiological transformation productsSpectral libraryFragmentation rulesBehavior of PFASPotential transformation productsMass spectrometryToxicity predictionChemical subclassesReaction productsLiver S9 fractionBiotransformation productsEnzymatic reactionsMutagenic toxicityReactionMouse liver S9 fractionBiological systemsS9 fractionDealkylationChemicalSpectrometryA deployable film method to enable replicable sampling of low-abundance environmental microbiomes
Mankiewicz Ledins P, Lin E, Bhattacharya C, Pollitt K, Dyson A, Hénaff E. A deployable film method to enable replicable sampling of low-abundance environmental microbiomes. Scientific Reports 2024, 14: 23857. PMID: 39394219, PMCID: PMC11470061, DOI: 10.1038/s41598-024-72341-y.Peer-Reviewed Original ResearchCitationsAltmetricMeSH Keywords and ConceptsConceptsHuman healthPotential human health impactsHuman health impactsNegative long-term impactEnvironmental microbiomesTime indoorsEnvironmental nucleic acidsExposure studiesSequencing-based analysisChronic exposureHealth impactsHigher DNA yieldLong-term impactLow abundanceMicrobiome abundanceIndoor microbiome exposureSamplerMicrobiome samplesAbundanceIndoor microbiomeDNA yieldExtraction kitMicrobiomeSampling strategyGlobal populationBetween and within-city variations of PM2.5 oxidative potential in five cities in Colombia
Rojas N, Agudelo-Castañeda D, Bustos D, Godri Pollitt K, Gao D, Rodriguez-Villamizar L. Between and within-city variations of PM2.5 oxidative potential in five cities in Colombia. Air Quality, Atmosphere & Health 2024, 18: 127-140. DOI: 10.1007/s11869-024-01632-0.Peer-Reviewed Original ResearchCitationsAltmetricConceptsPM2.5 mass concentrationsUltrasonic Personal Aerosol SamplerMass concentrationFine particulate matterAmbient PM2.5 samplesHealth exposure metricWithin-city variationAdverse health effectsPM2.5 OPPM2.5 samplesOP metricsBackground siteParticulate matterPM2.5Residential sitesIndustrial sitesOxidation potentialSite typesPersonal aerosol samplersExposure metricsHealth effectsAerosol samplerM-3ConcentrationSitesExposome-Wide Ranking to Uncover Environmental Chemicals Associated with Dyslipidemia: A Panel Study in Healthy Older Chinese Adults from the BAPE Study.
Ding E, Deng F, Fang J, Liu J, Yan W, Yao Q, Miao K, Wang Y, Sun P, Li C, Liu Y, Dong H, Dong L, Zhang X, Lu Y, Lin X, Ding C, Li T, Shi Y, Cai Y, Liu X, Godri Pollitt K, Ji J, Tong S, Tang S, Shi X. Exposome-Wide Ranking to Uncover Environmental Chemicals Associated with Dyslipidemia: A Panel Study in Healthy Older Chinese Adults from the BAPE Study. Environmental Health Perspectives 2024, 132: 97005. PMID: 39240788, PMCID: PMC11379127, DOI: 10.1289/ehp13864.Peer-Reviewed Original ResearchCitationsAltmetricMeSH Keywords and ConceptsConceptsDyslipidemia markersCardiovascular diseaseMulti-OmicsMarkers of dyslipidemiaExamination of cytokinesMeasurement of cytokinesSerum lipidomeSystemic inflammationMulti-omics profilingCardiac functionDyslipidemiaPrimary preventionClinical measuresSerumChinese adultsBlood transcriptomeImpact spectraCytokinesExposome-wide association studyInflammationMarkersBiomolecular pathwaysAssociationHealthy older adultsElectrocardiogramAssociation between Personal Abiotic Airborne Exposures and Body Composition Changes among Healthy Adults (60–69 Years Old): A Combined Exposome-Wide and Lipidome Mediation Approach from the China BAPE Study
Sun P, Guo X, Ding E, Li C, Ren H, Xu Y, Qian J, Deng F, Shi W, Dong H, Lin E, Guo P, Fang J, Zhang Q, Zhao W, Tong S, Lu X, Pollitt K, Shi X, Tang S. Association between Personal Abiotic Airborne Exposures and Body Composition Changes among Healthy Adults (60–69 Years Old): A Combined Exposome-Wide and Lipidome Mediation Approach from the China BAPE Study. Environmental Health Perspectives 2024, 132: 077005. PMID: 39028628, PMCID: PMC11259245, DOI: 10.1289/ehp13865.Peer-Reviewed Original ResearchCitationsAltmetricMeSH Keywords and ConceptsConceptsFat mass indicatorsHealthy older adultsBayesian kernel machine regressionVisceral fat areaOlder adultsPercent body fatBody compositionBody fat massExposome-wide association studyPrevention of chronic diseasesAir pollution exposureBody composition indicatorsMediation analysisInBody 770 deviceHealthy adultsAssociated with increased body fat massBody composition changesKernel machine regressionBayesian kernel machine regression modelsChronic diseasesPollution exposureBody fatAssociation studiesAdverse health effectsFat area
Academic Achievements & Community Involvement
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Activities
activity Environmental factors in placental pathology
01/01/2019 - PresentResearchDetailsToronto, ON, CanadaAbstract/SynopsisThe placenta is an organ that develops during pregnancy. It transfers oxygen and nutrients from the mother to the fetus and allows for the removal of waste products from the fetus. Placental changes during pregnancy are normal and important to a healthy pregnancy. Abnormal changes can occur when the mother is exposed to certain risk factors and toxins, resulting in placental dysfunction. Placental dysfunction often involves changes to the blood vessels of the placenta, leading to reduced oxygen and nutrient exchange between the mother and the fetus. This may not only affect fetal growth and survival, but also long-term health following delivery. This study will screen environmental contaminants in blood samples collected from a prospective cohort of pregnant women. The association between environmental exposures and placental dysfunction will be evaluated.
activity Shunyi Birth Cohort
10/01/2018 - PresentResearchDetailsBeijing, ChinaAbstract/SynopsisPersonal air pollutant exposure assessment of pregnant women
activity VHEMBE Birth Cohort
09/01/2018 - PresentResearchDetailsThohoyandou, LP, South AfricaCollaboratorsAbstract/SynopsisHousehold Air Pollution and Immune Function in South African Children
activity BAPE Study
08/01/2018 - PresentResearchDetailsJinan, Shandong, ChinaAbstract/SynopsisEvaluation of biomarkers of air pollutants exposure in the Chinese aged 60-69
activity Biomass Exposure and Cardiovascular Health in Children
04/01/2018 - PresentResearchDetailsCourtenay, BC, CanadaAbstract/SynopsisThis study is investigating the association between short and intermediate-term exposures to ambient PM2.5 from biomass burning and cardiovascular health in children.
Honors
honor Joan M. Daisey Outstanding Young Scientist Award
10/03/2022International AwardInternational Society of Exposure ScienceDetailsUnited Stateshonor Early Career Research Award
05/01/2021Yale University AwardYale School of Public HealthDetailsUnited States
News & Links
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Media
News
- December 10, 2025Source: Yahoo News
Are aluminum pans safe to cook with? We consulted experts on different types of aluminum cookware
- July 08, 2025Source: Yahoo!Life
The best nontoxic cookware for a healthier kitchen
- July 03, 2025Source: MLK50
YSPH professor recommends improvements to Memphis air quality testing program
- May 20, 2025
From Theory to Practice: Experiential Learning at YSPH
Get In Touch
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Contacts
Environmental Health Sciences
60 College Street
New Haven, CT 06510
United States
Locations
LEPH
Lab
60 College Street, Fl 5, Rm 510
New Haven, CT 06510