Prenatal and childhood exposure to per-/polyfluoroalkyl substances (PFASs) and its associations with childhood overweight and/or obesity: A systematic review with meta-analyses
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Abstract
Background: Per-/polyfluoroalkyl substances (PFASs) are persistent organic pollutants and suspected endocrine disruptors. Objective: The aim of this work was to conduct a systematic review with meta-analysis to summarise the associations between prenatal or childhood exposure to PFASs and childhood overweight/obesity. Methods: The search was performed on the bibliographic databases PubMed and Embase with text strings containing terms related to prenatal, breastfeeding, childhood, overweight, obesity, and PFASs. Only papers describing a biomonitoring study in pregnant women or in children up to 18 years that assessed body mass index (BMI), waist circumference (WC), or fat mass in children were included. When the estimates of the association between a PFAS and an outcome were reported from at least 3 studies, a meta-analysis was conducted; moreover, to correctly compare the studies, we developed a method to convert the different effect estimates and made them comparable each other. Meta-analyses were performed also stratifying by sex and age, and sensitivity analyses were also performed. Results: In total, 484 and 779 articles were retrieved from PubMed and Embase, respectively, resulting in a total of 826 articles after merging duplicates. The papers included in this systematic review were 49: 26 evaluating prenatal exposure to PFASs, 17 childhood exposure, and 6 both. Considering a qualitative evaluation, results were conflicting, with positive, negative, and null associations. 30 papers were included in meta-analyses (19 prenatal, 7 children, and 4 both). Positive associations were evidenced between prenatal PFNA and BMI, between PFOA and BMI in children who were more than 3 years, and between prenatal PFNA and WC. Negative associations were found between prenatal PFOS and BMI in children who were 3 or less years, and between PFHxS and risk of overweight. Relatively more consistent negative associations were evidenced between childhood exposure to three PFASs (PFOA, PFOS, and PFNA) and BMI, in particular PFOS in boys. However, heterogeneity among studies was high. Conclusion: Even though heterogeneous across studies, the pooled evidence suggests possible associations, mostly positive, between prenatal exposure to some PFASs and childhood BMI/WC; and relatively stronger evidence for negative associations between childhood exposure to PFASs and childhood BMI.
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PFAS effects on childhood overweight/obesity require compound-specific interpretation rather than a single pooled direction of effect.
“These findings show the importance of compound-specific interpretation rather than a single pooled direction of effect [90].”
From Placental Pathophysiology and Developmental Programming of Adult Cardiometabolic Risk: A Narrative Review of Pregnancy Exposures (2026) · cites this paper as [90]
Prenatal and early-life PFAS exposure is associated with overweight/obesity in children older than 3 years, with effects varying by specific compound and sex.
“For PFAS, a systematic review and meta-analysis reported associations between prenatal and early-life PFAS exposure and overweight/obesity in children older than 3 years, with effects varying by specific compound and sex.”
From Placental Pathophysiology and Developmental Programming of Adult Cardiometabolic Risk: A Narrative Review of Pregnancy Exposures (2026) · cites this paper as [90]
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- Authors
- Frigerio, G., Ferrari, C. M., & Fustinoni, S.
- Affiliations
- University of Luxembourg (LU)
- University of Milan (IT)
- Corresponding author
- Frigerio, Gianfranco
- Venue
- Environmental Health
- Published
- 2023-08-14
- Volume
- 22
- Issue
- 1
- Pages
- 56-56
- ISSN
- 1476-069X (ISSN-L)
- PMC
- PMC10424367
- OpenAlex
- W4385807574
- Cited by
- 54
- References
- 120
- Citations by year
- 2026: 23 · 2025: 16 · 2024: 13 · 2023: 2
- FWCI
- 1.25
- Type
- journal article
- Language
- en
- Open access
- gold
- doi.org
- Locations
- Environmental Health (publishedVersion, cc-by)
- Research Square (acceptedVersion, cc-by)
- PubMed Central (publishedVersion, cc-by)
- PubMed (publishedVersion)
- Archivio Istituzionale della Ricerca (Universita Degli Studi Di Milano) (submittedVersion, other-oa)
- Open Repository and Bibliography (University of Luxembourg) (submittedVersion, cc-by-nc-sa)
- DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
- Funders
- Fonds National de la Recherche Luxembourg (A18/BM/12341006)
- Topics
- Physical Sciences › Environmental Science › Environmental Chemistry › Per- and polyfluoroalkyl substances research
- Physical Sciences › Environmental Science › Health, Toxicology and Mutagenesis › Toxic Organic Pollutants Impact
- Physical Sciences › Environmental Science › Health, Toxicology and Mutagenesis › Effects and risks of endocrine disrupting chemicals
- Keywords
- per- and polyfluoroalkyl substances, PFAS exposure, prenatal exposure, children's exposure, childhood obesity, childhood overweight, body mass index, waist circumference, fat mass, perfluorooctanoic acid, PFOS, PFNA, PFHxS, endocrine disruptors, persistent organic pollutants, breastfeeding, sex differences
- MeSH terms
- Child, Environmental Pollutants, Female, Fluorocarbons, Humans, Male, Pregnancy, Prenatal Exposure Delayed Effects, Alkanesulfonic Acids, Overweight, Pediatric Obesity
About these checks
Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.
Statistics and arithmetic are recomputed, not judged.
Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.
What counts as a claim ›How we measure confidence ›How we check this ›
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