Interaction between parental preconception and prenatal smoking and alcohol use on autism-like behaviour in preschoolers: a cross-sectional study in Huizhou, China - Summary - MDSpire

Interaction between parental preconception and prenatal smoking and alcohol use on autism-like behaviour in preschoolers: a cross-sectional study in Huizhou, China

  • By

  • Shuang Wu

  • Huiting Chen

  • Jinming Liu

  • Ruoqing Chen

  • Weiying Liu

  • Yulan Wu

  • Zizi Liu

  • Feixiang Zeng

  • Dongyan Wen

  • Jiarong Lin

  • Lvping Li

  • Yu Jin

  • May 26, 2026

  • 0 min

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Objective:

To investigate the associations between preconception and prenatal smoking and alcohol consumption and autism-like behaviour in preschool children.

Approach:
  • Data Analysis: Logistic regression was used to analyze associations between parental smoking, drinking, and autism-like behaviour, with interaction models evaluating the interplay between smoking and drinking.
Key Findings:
  • Maternal prenatal passive smoking exposure (OR = 1.327, 95% CI: 1.042 to 1.690) and paternal smoking history (OR = 1.643, 95% CI: 1.036 to 2.605) are associated with higher odds of autism-like behaviour.
  • A significant negative additive interaction was observed between maternal smoking cessation during pregnancy and concurrent alcohol consumption (RERI = -2.170, 95% CI: -4.035 to -0.304).
Interpretation:

Prenatal exposure to parental smoking is a significant risk factor for autism-like behaviour in preschoolers.

Limitations:
  • The study is cross-sectional, limiting causal inference.
  • Self-reported data may introduce bias in smoking and alcohol consumption reporting.
Conclusion:

This study identifies prenatal exposure to parental smoking as a significant risk factor for autism-like behaviour in preschoolers.

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