Sex- and age-specific association between outdoor light at night and obesity in Chinese adults: A national cross-sectional study of 98,658 participants from 162 study sites.

ABSTRACT:

Background

Exposure to light at night (LAN) is a potent disruptor of the circadian system. Whether LAN exposure exerts a sex- or age-specific influence on obesity needs investigation.

Objectives

To estimate the sex- and age-specific associations of exposure to outdoor LAN and obesity based on a national and cross-sectional survey.

Methods

The study included a nationally representative sample of 98,658 adults aged ≥ 18 years who had lived in their current residence for ≥ 6 months from 162 study sites across mainland China in 2010. Outdoor LAN exposure was estimated from satellite imaging data. General obesity was defined as body-mass index (BMI) ≥ 28 kg/m² and central obesity was defined as waist circumference ≥ 90 cm in men and ≥ 85 cm in women. Linear and

SUBMITTER: Zhang X 

PROVIDER: S-EPMC9987422 | biostudies-literature | 2023

REPOSITORIES: biostudies-literature