Evidence map›Paper›PMID 41776597›Full record

ArticleBMC medicine2026

Early childhood weight gain and alanine aminotransferase at age 8: an adjunct study of the Japan Environment and Children's Study.

Naw Awn J-P, Keiko Yamasaki, Naomi Mitsuda, Masamitsu Eitoku, Ryuhei Nagai, Mariko Araki, Mariko Taniguchi-Ikeda, Narufumi Suganuma

Abstract read
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Article in BMC medicine, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

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1 · What the graph read from it

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2 · The registry

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3 · Its place in the literature

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4 · The record

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5 · Who and what money

Authors and funding

8 authors.

Naw Awn J-PDepartment of Environmental Medicine, Kochi Medical School, Kochi University, Nankoku, Kochi, 783-8505, Japan. jpnawawn@kochi-u.ac.jp.ORCID 0000-0002-6862-2290
Keiko YamasakiDepartment of Environmental Medicine, Kochi Medical School, Kochi University, Nankoku, Kochi, 783-8505, Japan.
Naomi MitsudaDepartment of Pediatrics, Kochi Medical School, Kochi University, Nankoku, Japan.
Masamitsu EitokuDepartment of Environmental Medicine, Kochi Medical School, Kochi University, Nankoku, Kochi, 783-8505, Japan.
Ryuhei NagaiDepartment of Obstetrics and Gynecology, Kochi Medical School, Kochi University, Nankoku, Japan.
Mariko ArakiDepartment of Pediatrics, Kochi Medical School, Kochi University, Nankoku, Japan.
Mariko Taniguchi-IkedaDepartment of Pediatrics, Kochi Medical School, Kochi University, Nankoku, Japan.
Narufumi SuganumaDepartment of Environmental Medicine, Kochi Medical School, Kochi University, Nankoku, Kochi, 783-8505, Japan.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundThe critical age window during which early-life adiposity impacts liver health remains unclear. This study aimed to identify the timing of adiposity gain associated with elevated alanine aminotransferase (ALT) levels in 8-year-old children.

methodsThis prospective cohort study included 1322 children (665 boys; mean age 96.2 ± 3.4 months) from a subset of the Japan Environment and Children's Study. Anthropometric data were collected at birth and at 1, 2, 3, 4, 5, 6, and 8 years. Adiposity gain was assessed using conditional weight, a residual-based metric adjusted for prior weight and current height. Excess adiposity was defined as conditional weight above the 90th percentile. ALT was measured at age 8, with elevation defined as > 26 IU/L in boys and > 22 IU/L in girls. Multivariable regression models were adjusted for maternal, perinatal, and early-life factors.

resultsALT elevation was observed in 3.3% of the children. Adiposity gain was significantly associated with higher ALT concentrations, beginning at age 3 in girls (adjusted coefficient: 0.11, p < 0.01) and at age 4 in boys (adjusted coefficient: 0.10, p < 0.05). The 4-5-year interval marked the earliest period of notable risk, with adjusted risk ratios (95% CI) of 4.18 (1.77-9.87) in boys and 3.29 (1.04-10.40) in girls. Birth weight and adiposity during infancy were not consistently associated with ALT concentrations.

conclusionsEarly childhood-particularly between ages 3 and 5 years-may represent a period during which associations between excess adiposity gain and later liver health become detectable. Because liver enzymes were assessed at a single time point, the temporal onset of these associations cannot be established. These findings should be interpreted cautiously and warrant confirmation using longitudinal assessments of liver health.

Indexed as

AdiposityAlanine TransaminaseWeight GainChildChild, PreschoolFemaleHumansInfantJapanMaleProspective StudiesAlanine TransaminaseAdiposity reboundBMIChildhood growthConditional weightFatty liverLiver enzymeLongitudinal cohort studyMASLDObesityPediatric

Identifiers

PMID41776597
PMCPMC13063647

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