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Eyes on Development: Exploring the Impact of Early Life Nutrition Exposures on Child Cognition Through Eye-Tracking Assessment

Rianda D, Mjaaseth UN, DeBolt MC, Agustina R, Oakes LM, Stewart CP

Nutrition reviews, 2026

Abstract

Background: The effects of certain nutrients on cognition in early life are hypothesized to be domain specific. Previous studies have examined the associations between child nutrition and cognitive, motor, or socio-emotional development, but the assessment methods are often insensitive to the specific functional domains affected by nutrition.

Objective: This scoping review had 2 objectives: (1) to synthesize evidence on the impact of early life nutrition exposures on child cognition evaluated using eye-tracking assessment and (2) to describe the use of eye trackers for child cognitive assessment and to provide recommendations for eye-tracking implementation in future research.

Methods: A systematic search was performed using the databases PubMed, Embase, and Food Science and Technology Abstracts, from database inception to April 2024. Additionally, we hand searched reference lists of eligible studies to identify additional relevant publications. We included studies of any nutrition exposures (intervention or assessment) involving pregnant or lactating mothers or children aged 0-5 years, with child cognitive outcomes assessed using eye-tracking assessments. The review was conducted following the PRISMA-ScR checklist.

Results: A total of 1140 article titles and abstracts were screened, with 9 articles included in this review (3 randomized controlled trials, 5 prospective cohort studies, and 1 cross-sectional and prospective cohort study nested in a trial). The majority of the…

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