Impact of zinc deficiency on the recurrence in aphthous stomatitis: A prospective case-control study.

Patients with recurrent mouth ulcers had significantly lower blood zinc levels than healthy controls, with over half of ulcer patients showing zinc deficiency compared to one-sixth of controls. The findings suggest low zinc levels may predict ulcer recurrence and supplementation could help prevent it.

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.