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Accepted for/Published in: Journal of Medical Internet Research

Date Submitted: Jun 25, 2026
Open Peer Review Period: Jun 25, 2026 - Aug 20, 2026
Date Accepted: Sep 9, 2026
(closed for review but you can still tweet)

The final, peer-reviewed published version of this preprint can be found here:

Peer Referral Pathways and 6-Month Outcomes in a Tirzepatide-Supported Digital Weight Loss Service: Retrospective Cohort Study

Talay L, Swinckels L, Hom J, Tan M, Ahuja N

Peer Referral Pathways and 6-Month Outcomes in a Tirzepatide-Supported Digital Weight Loss Service: Retrospective Cohort Study

J Med Internet Res 2026;28:e105583

DOI: 10.2196/105583

PMID: 42804756

Peer Referral Pathways and Six-Month Outcomes in a Tirzepatide-Supported Digital Weight-Loss Service: A Retrospective Cohort Study

  • Louis Talay; 
  • Laura Swinckels; 
  • Jason Hom; 
  • Marilyn Tan; 
  • Neera Ahuja

ABSTRACT

In a retrospective analysis of 34,449 adults using an unsubsidised, tirzepatide‑supported digital weight‑loss service in Australia, patients entering via peer referral showed higher six‑month program adherence and greater percentage weight loss than propensity score–matched non‑referred patients, suggesting that peer‑to‑peer networks may support retention and effectiveness in medicated obesity care.


 Citation

Please cite as:

Talay L, Swinckels L, Hom J, Tan M, Ahuja N

Peer Referral Pathways and 6-Month Outcomes in a Tirzepatide-Supported Digital Weight Loss Service: Retrospective Cohort Study

J Med Internet Res 2026;28:e105583

DOI: 10.2196/105583

PMID: 42804756

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