Access to electric light is associated with delays of the dim light melatonin onset in a traditionally hunter-gatherer Toba/Qom community

Abstract: Key to the transition of humans from nomadic hunting-gathering groups to industrialized and highly urbanized societies was the creation of protected and artificially lit environments that extended the natural daylight hours and consolidated sleep away from nocturnal threats. These condi...

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Autores principales: Casiraghi, Leandro P., Plano, Santiago Andrés, Fernández-Duque, Eduardo, Valeggia, Claudia, Golombek, Diego A., Iglesia, Horacio O. de la
Formato: Artículo
Lenguaje:Inglés
Publicado: Wiley 2020
Materias:
MEDICINA
PUEBLOS ORIGINARIOS
SUEÑO
FISIOLOGIA
LUZ ARTIFICIAL
LUZ NATURAL
Acceso en línea:https://repositorio.uca.edu.ar/handle/123456789/10856
Aporte de:
Repositorio Institucional de la Universidad Católica Argentina (UCA) de Universidad Católica Argentina
id I33-R139123456789-10856
record_format dspace
institution Universidad Católica Argentina
institution_str I-33
repository_str R-139
collection Repositorio Institucional de la Universidad Católica Argentina (UCA)
language Inglés
topic MEDICINA
PUEBLOS ORIGINARIOS
SUEÑO
FISIOLOGIA
LUZ ARTIFICIAL
LUZ NATURAL
spellingShingle MEDICINA
PUEBLOS ORIGINARIOS
SUEÑO
FISIOLOGIA
LUZ ARTIFICIAL
LUZ NATURAL
Casiraghi, Leandro P.
Plano, Santiago Andrés
Fernández-Duque, Eduardo
Valeggia, Claudia
Golombek, Diego A.
Iglesia, Horacio O. de la
Access to electric light is associated with delays of the dim light melatonin onset in a traditionally hunter-gatherer Toba/Qom community
topic_facet MEDICINA
PUEBLOS ORIGINARIOS
SUEÑO
FISIOLOGIA
LUZ ARTIFICIAL
LUZ NATURAL
description Abstract: Key to the transition of humans from nomadic hunting-gathering groups to industrialized and highly urbanized societies was the creation of protected and artificially lit environments that extended the natural daylight hours and consolidated sleep away from nocturnal threats. These conditions isolated humans from the natural regulators of sleep and exposed them higher levels of light during the evening, which are associated with a later sleep onset. Here we investigated the extent to which this delayed timing of sleep is due to a delayed circadian system. We studied two communities of Toba/Qom Argentina, one with and the other without access to electricity. These communities have recently transitioned from a hunting-gathering subsistence to mixed subsistence systems and represent a unique model in which to study the potential effects of the access to artificial light on sleep physiology. We have previously shown that participants in the community with access to electricity had, compared to participants in the community without electricity, later sleep onsets and shorter sleep bouts. Here we show they also have a delayed dim light melatonin onset (DLMO). This difference is present during the winter but not during the spring when the influence of evening artificial light is likely less relevant. We also confirm that the difference in DLMO cannot be accounted by differences in clock gene polymorphisms. Our results support the notion that the human transition into artificially lit environments had a major impact on physiological systems that regulate sleep timing, including the phase of the master circadian clock.
format Artículo
author Casiraghi, Leandro P.
Plano, Santiago Andrés
Fernández-Duque, Eduardo
Valeggia, Claudia
Golombek, Diego A.
Iglesia, Horacio O. de la
author_facet Casiraghi, Leandro P.
Plano, Santiago Andrés
Fernández-Duque, Eduardo
Valeggia, Claudia
Golombek, Diego A.
Iglesia, Horacio O. de la
author_sort Casiraghi, Leandro P.
title Access to electric light is associated with delays of the dim light melatonin onset in a traditionally hunter-gatherer Toba/Qom community
title_short Access to electric light is associated with delays of the dim light melatonin onset in a traditionally hunter-gatherer Toba/Qom community
title_full Access to electric light is associated with delays of the dim light melatonin onset in a traditionally hunter-gatherer Toba/Qom community
title_fullStr Access to electric light is associated with delays of the dim light melatonin onset in a traditionally hunter-gatherer Toba/Qom community
title_full_unstemmed Access to electric light is associated with delays of the dim light melatonin onset in a traditionally hunter-gatherer Toba/Qom community
title_sort access to electric light is associated with delays of the dim light melatonin onset in a traditionally hunter-gatherer toba/qom community
publisher Wiley
publishDate 2020
url https://repositorio.uca.edu.ar/handle/123456789/10856
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