Association between self-reported chewing status and glycemic control in japanese adults

Komei Iwai, Tetsuji Azuma, Takatoshi Yonenaga, Daisuke Ekuni, Kazutoshi Watanabe, Akihiro Obora, Fumiko Deguchi, Takao Kojima, Manabu Morita, Takaaki Tomofuji

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)


This cross-sectional study investigated the relationship between self-reported chewing status and glycemic control in 30,938 Japanese adults who participated in health checkups. Chewing status was evaluated using a self-reported questionnaire. We defined high hemoglobin A1c (HbA1c) levels as a HbA1c level ≥6.5%; 692 (2.2%) respondents met this criterion. After adjusting for gender, age, smoking status, exercise habits, body mass index and eating speed, high HbA1c levels was found to be associated with male gender (odds ratio (OR), 1.568; 95% confidence interval (CI), 1.310 to 1.878; p < 0.001), older age (OR, 1.077; 95% CI, 1.068 to 1.087; p<0.001), higher body mass index (OR, 1.246; 95% CI, 1.225 to 1.268; p <0.001), current smoker status (OR, 1.566; 95% CI, 1.303 to 1.882; p < 0.001) and chewing difficulty (OR, 1.302; 95% CI, 1.065 to 1.591; p < 0.05). In conclusion, self-reported chewing difficulty was associated with high HbA1c levels in Japanese adults.

Original languageEnglish
Article number9548
JournalInternational journal of environmental research and public health
Issue number18
Publication statusPublished - Sept 2021


  • Cross-sectional studies
  • Epidemiology
  • Glycated hemoglobin A
  • Mastication

ASJC Scopus subject areas

  • Pollution
  • Public Health, Environmental and Occupational Health
  • Health, Toxicology and Mutagenesis


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