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Prevalence and Influencing Factors of Overweight and Obesity Among Left-Behind Children Under 6 Years Old in China: A

Zhaoyang Fan1, Jing Nan2, Chen Zhou2

  • 1Capital Center for Children's Health, Capital Medical University, Capital Institute of Pediatrics, Beijing 100020, China.

Nutrients
|January 10, 2026
PubMed

Insights

Overweight and obesity affect 6.68% and 2.22% of Chinese left-behind children (LBC) under 6. Boys, younger children, and those with migrant fathers face higher risks, necessitating targeted interventions.

Area of Science:

  • Pediatric Nutrition
  • Public Health
  • Child Development

Background:

  • Overweight and obesity are growing global health concerns, particularly in vulnerable child populations.
  • Left-behind children (LBC) in China face unique socioeconomic and environmental challenges that may impact their nutritional status.
  • Early identification of risk factors is crucial for effective prevention and management strategies.

Purpose of the Study:

  • To determine the prevalence of overweight and obesity among left-behind children (LBC) under 6 years old in China.
  • To identify key factors influencing overweight and obesity in this specific demographic.
  • To inform targeted public health interventions for early prevention and control.

Main Methods:

  • Utilized data from the 2016-2017 National Nutrition and Health Survey.
  • Included a sample of 19,229 left-behind children under 6 years old in China.
  • Employed Rao-Scott chi-square tests and multivariate logistic regression for statistical analysis.

Main Results:

  • Prevalence rates for overweight and obesity were 6.68% and 2.22%, respectively.
  • Boys, children aged infancy to preschool, and those with migrant fathers exhibited higher rates.
  • Risk factors included male sex, younger age, eastern China residence, paternal migration, and higher household income.

Conclusions:

  • Left-behind children under 6 in China are at significant risk for overweight and obesity.
  • Specific subgroups, including boys and those with migrant fathers, require focused attention.
  • Strengthened growth monitoring and integration into national nutrition policies are recommended.

Keywords:
left-behind childrenobesityoverweight

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