Investigación Programas
Investigación

ELHNA

Exposures to light pollution and heat, and neurodevelopment in adolescents

Proyecto ELHNA
Foto: Warren Wong / Unsplash
Duración
01/01/2020 - 31/12/2022
Coordinador
Mònica Guxens
Financiadores
FONDO DE INVESTIGACIÓN SANITARIA - ISCIII (FIS-ISCIII)

More than half of the world's population lives in cities. Light pollution and heat are two emerging urban exposures. The maturation of the brain during adolescence is a decisive phase for the development of cognitive function and underlies the initiation of many mental health problems. Although experimental studies show that these two exposures can affect brain function, epidemiological studies are non-existent or scarce, particularly in adolescence.

Objectives

To investigate the association between the exposure to both light pollution and heat, and the cognitive function and the mental health problems in adolescents of 14-16 years old.

Methods

We will include two population-based birth cohort studies, the Spanish INMA project (n=3238) and the Dutch Generation R study (n=9978). Between 2017 and 2021 the follow-ups at 14-16 years old are ongoing. We will estimate the annual levels of outdoor light pollution exposure in the houses of the adolescents for the year before the neurodevelopment assessment using calibrated images of the satellite Jilin-1, and obtaining a blue light spectrum index and a melatonin suppression index. We will estimate the daily levels of heat exposure in the houses and the schools of the adolescents for the year before the neurodevelopment assessment using the climate model UrbClimTM, and obtaining data of temperature, urban heat islands intensity, and number of heat wave days. The neurodevelopment evaluation of the adolescents includes several cognitive function tests and a questionnaire of mental health problems. We will run the appropriate statistical analysis.

Total Funding

99,552.75 €

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