What question did this study set out to answer?

This review aims to identify effective intervention features for changing smoking, alcohol, diet, and physical activity behaviors during pregnancy.

Features of smoking cessation, alcohol reduction, and diet and physical activity interventions associated with changing behaviours during pregnancy: a systematic review of reviews

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Systematic review analyzes features of interventions promoting behaviour change in pregnancy, indicating key effectiveness factors.

This review aims to identify effective intervention features for changing smoking, alcohol, diet, and physical activity behaviors during pregnancy.
Conducted a systematic review of 66 reviews published between 2013 and 2025 covering various behaviors during pregnancy.
Analyzed shared behaviour change techniques, intervention content, and delivery methods associated with effectiveness.
Highlighted the need for further research on promising intervention features for behaviors not thoroughly tested.
Diet and physical activity interventions are more effective when started in the first trimester, last longer, and include regular engagement.
Smoking cessation interventions are more effective with the use of incentives and counseling.
Brief interventions for alcohol use show effectiveness, though there is inconsistent delivery across studies.

Newham et al. (2026) studied this question.

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