Kefir and Reduced ADHD Symptom Severity

• Effects of kefir on symptoms, sleep, and gut microbiota in children with ADHD: a randomised controlled trial.

  • 2025-11-24
  • RCT
  • BMC psychiatry 25(1)
  • • Kate Lawrence
    • Philippa Fibert
    • Miguel Toribio-Mateas
    • Alice M Gregory
    • Jemima Hobbs
    • Frits Quadt
    • Stephen Wright
    • Paul D Cotter
    • Shriram Patel
    • Kyriaki Myrissa

  • PubMed: 41286799
  • DOI: 10.1186/s12888-025-07568-8

  5 Insights on

  • Reduced ADHD Symptom Severity

  • High evidence
  • Clinical

  A non-significant interaction was observed between baseline symptom severity and group for teacher-rated SWAN scores, with children in the kefir group who had the highest baseline ADHD symptoms showing lower scores at week six (M = 2.03, SE = 0.33 vs. 2.86, SE = 0.34), p = 0.088.

  Effect

  Neutral

  Effect size

  Small

  Significant

  No

  Dose

  daily kefir drink