September 10, 2025Scientific ReportsOpen Access

Body mass index, physical activity and dental caries: cross-sectional HUNT4 oral health study

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Cross-sectional study reveals BMI impacts dental caries, suggesting age modifies these associations.

Higher body mass index is associated with an increased number of decayed, missing, and filled teeth.
Individuals with BMI ≥ 30 kg/m2 had a mean increase in decayed teeth (1.19) compared to those with BMI < 25 kg/m2.
Cross-sectional analysis utilized data from the HUNT4 Oral Health Survey, encompassing 4752 adults.
Age significantly modifies the relationship between body mass index and dental caries experience in adults.

Jiang et al. (2025) studied this question.

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