Evidence map›Paper›PMID 30922319›Full record

ArticleEnvironmental health : a global access science source2019

Fluoride exposure and pubertal development in children living in Mexico City.

Yun Liu, Martha Téllez-Rojo, Howard Hu, Brisa N Sánchez, E Angeles Martinez-Mier, Niladri Basu, Adriana Mercado-García, Maritsa Solano-González, Karen E Peterson

Open access · goldAbstract read
In one paragraph

Article in Environmental health : a global access science source, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 17 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
17citing papers in PubMed, 1 pooled it
2.7field-weighted citation impact, top 11% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

17 citing papers in PubMed, 1 synthesis or guideline pooled it, 42 citations in OpenAlex.

  1. Pooled it
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  13. Human exposure to fluoride from tea (Camellia sinensis) in a volcanic region-Canary Islands, Spain.Environmental science and pollution research international · 2020
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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

9 authors at 5 institutions in 3 countries.

Yun LiuDepartment of Nutritional Sciences, University of Michigan School of Public Health, Ann Arbor, Michigan, USA.
Martha Téllez-RojoNutrition and Health Research, National Institute of Public Health, Ave. Universidad 655, Santa María Ahuacatitlán, Cuernavaca, Mor, 62100, México. mmtellez@correo.insp.mx.
Howard HuOccupational and Environmental Health, Dalla Lana School of Public Health, University of Toronto, Toronto, Canada.
Brisa N SánchezDepartment of Biostatistics, University of Michigan School of Public Health, Ann Arbor, Michigan, USA.
E Angeles Martinez-MierDepartment of Cariology, Operative Dentistry and Dental Public Health, Indiana University School of Dentistry, Indianapolis, Indiana, USA.
Niladri BasuFaculty of Agricultural and Environmental Sciences, McGill University, Montreal, Quebec, Canada.
Adriana Mercado-GarcíaNutrition and Health Research, National Institute of Public Health, Ave. Universidad 655, Santa María Ahuacatitlán, Cuernavaca, Mor, 62100, México.
Maritsa Solano-GonzálezNutrition and Health Research, National Institute of Public Health, Ave. Universidad 655, Santa María Ahuacatitlán, Cuernavaca, Mor, 62100, México.
Karen E PetersonDepartment of Nutritional Sciences, University of Michigan School of Public Health, Ann Arbor, Michigan, USA.
National Institute of Public Health · KHUniversity of Michigan–Ann Arbor · USIndiana University – Purdue University Indianapolis · USMcGill University · CAUniversity of Toronto · CA

Funding

LEAD DOSE BIOMARKERS, REPRODUCTION, AND INFANT OUTCOMESR01ES007821 · NIEHS · UNIVERSITY OF MICHIGAN AT ANN ARBOR · PI PETERSON, KAREN EILEEN · 1998 to 2010
$4.7M
Project 3: Developmental Exposures and Diet: Epigenetics of Metabolic SyndromeP01ES022844 · NIEHS · UNIVERSITY OF MICHIGAN AT ANN ARBOR · PI DOLINOY, DANA, PADMANABHAN, VASANTHA · 2013 to 2018
$3.9M
Prenatal and Childhood Exposure to Fluoride and NeurodevelopmentR01ES021446 · NIEHS · UNIVERSITY OF TORONTO · PI HU, HOWARD, MCLAUGHLIN, JOHN · 2012 to 2018
$2.3M
Project 1: Prenatal Lead Exposure, Early Childhood Growth, and Sexual MaturationP20ES018171 · NIEHS · UNIVERSITY OF MICHIGAN AT ANN ARBOR · PI PETERSON, KAREN EILEEN · 2010 to 2012
$584k
NIEHS NIH HHS P01 ES022844NIEHS NIH HHS P01ES022844NIEHS NIH HHS P20 ES018171NIEHS NIH HHS P20ES018171NIEHS NIH HHS R01 ES007821NIEHS NIH HHS R01ES007821NIEHS NIH HHS R01 ES021446NIEHS NIH HHS R01ES021446
6 · The paper itself

Abstract

backgroundPrevious animal and ecological studies have provided evidence for an earlier sexual maturation in females in relation to fluoride exposure; however, no epidemiological studies have examined the association between fluoride exposure and pubertal development in both boys and girls using individual-level biomarkers of fluoride. Capitalizing on an ongoing Mexican birth cohort study, we examined the association between concurrent urinary fluoride levels and physical markers of pubertal development in children.

methodsWe conducted a cross-sectional study of 157 boys and 176 girls at age 10-17 years living in Mexico City. We used ion-selective electrode-based diffusion methods to assess fluoride levels in urine, adjusting for urinary specific gravity. Pubertal stages were evaluated by a trained physician. Associations of fluoride with pubertal stages and age at menarche were studied using ordinal regression and Cox proportional-hazard regression, respectively.

resultsIn the entire sample, the geometric mean and interquartile range (IQR) of urinary fluoride (specific gravity adjusted) were 0.59 mg/L and 0.31 mg/L, respectively. In boys, our analysis showed that a one-IQR increase in urinary fluoride was associated with later pubic hair growth (OR = 0.71, 95% CI: 0.51-0.98, p = 0.03) and genital development (OR = 0.71, 95% CI: 0.53-0.95, p = 0.02). No significant associations were found in girls, although the direction was negative.

conclusionsChildhood fluoride exposure, at the levels observed in our study, was associated with later pubertal development among Mexican boys at age 10-17 years. Further research is needed to confirm these findings.

Indexed as

Environmental ExposurePubertyAdolescentChildCitiesCohort StudiesFemaleFluoridesGenitalia, MaleHumansMaleMexicoOdds RatioFluoridesFluorideGenitaliaMenarchePubertyPubic hair

Identifiers

PMID30922319
PMCPMC6439980
OpenAlexW2943678536

What OpenQuestion holds

Textmetadata
LicenceCC BY
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.