Short sleep duration and incident self-reported severe periodontitis among Japanese adults: a nationwide prospective cohort study.

Researchers followed Japanese adults over time and found that those sleeping less than 6 hours nightly had a higher risk of developing severe periodontitis compared to those with longer sleep duration, alongside other risk factors including age, income, and chronic conditions.

A plain-English summary of the study's own findings — we don't add our own claims or interpretation. Read the full paper for the complete methods and results, and apply your own clinical judgement.