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Navigating Conflicting Health Advice Amid Scientific Updates: Effects of Proactive Versus Reactive Messaging
Yanmengqian Zhou1, Shu Scott Li2, Chun Yang3
1Department of Communication, University at Buffalo.
Health Communication
|June 16, 2026
Summary
Communicating evolving health recommendations effectively is crucial. Proactive messaging about potential changes helps initial trust but can backfire later, while highlighting the source of updates improves public acceptance.
Area of Science:
- Health Communication
- Behavioral Science
- Public Health
Background:
- Evolving scientific evidence often leads to conflicting public health recommendations.
- This creates challenges for public decision-making and trust in health guidance.
Purpose of the Study:
- To examine communication strategies for presenting evolving health recommendations.
- Investigated proactive vs. reactive messaging and source differences' impact on public response.
Main Methods:
- A web-based experimental study with 600 U.S. participants.
- Assessed message and source responses, and behavioral intentions toward updated recommendations.
Main Results:
- Proactive messaging maintained initial recommendation responses but had drawbacks upon updates.
- Reactive messaging offered limited benefits; source differences improved updated recommendation responses.
- Open-mindedness moderated some effects; message responses mediated source perception to behavioral intention links.
Conclusions:
- Findings advance understanding of how individuals process scientific updates.
- Offers guidance for effectively communicating evolving health recommendations to the public.
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