Bottle feeding to sleep beyond 12 months is associated with higher risk of tooth decay and overweight in Australian children: Findings from the Healthy Smiles Healthy Kids cohort study
Date
2025
Authors
Cheng, H.
John, J.
Scott, J.
Denney-Wilson, E.
Do, L.
Bhole, S.
Baur, L.
Arora, A.
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Journal article
Citation
Australian and New Zealand Journal of Public Health, 2025; 49(2):100224-1-100224-9
Statement of Responsibility
Heilok Cheng, James John, Jane Scott, Elizabeth Denney-Wilson, Loc Do, Sameer Bhole, Louise Baur, Amit Arora
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Abstract
Objective: Bottle feeding to sleep may increase early childhood caries (ECC) and overweight risk through sugar exposure and overfeeding. This study examined the association between feeding to sleep at 24 and 36 months on both ECC and overweight at 3-4 years. Methods: Participants were children in the Healthy Smiles Healthy Kids longitudinal birth cohort. Exposure was bottle feeding to sleep at 24 and 36 months. Outcomes were ECC (prevalence; number of caries-affected tooth surfaces, dmfs) and overweight at 3-4 years. Results: 718 and 729 children had dental examinations and anthropometric measurements, respectively. 30.3% and 21.7% of children were bottle-fed to sleep at 24 and 36 months, respectively. Feeding to sleep at 24 months was associated with higher odds of overweight (OR 1.90, 95%CI 1.06-3.38) and moderately associated with higher caries (dmfs 1.48, 95%CI 1.00-2.20). Feeding to sleep at 36 months was associated with higher caries (dmfs 1.88, 95%CI 1.22-2.91). Conclusions: Feeding to sleep was associated with higher odds of overweight and higher numbers of caries-affected tooth surfaces. Communicating appropriate sleep, settling and bottle cessation methods throughout early childhood may prevent ECC and overweight. Implications for Public Health: Early interventions addressing bottle feeding could reduce the dual burden of ECC and obesity
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© 2025 The Authors. Published by Elsevier B.V. on behalf of Public Health Association of Australia. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).