This research evaluates how AI-generated coaching messages compare to human coaching for behavioral weight loss interventions.

• LLM-generated coaching messages were rated equally effective as human coaching in personalization, helpfulness, and motivational quality
• AI coaching was perceived as more novel than standard automated messages
• Participants could not reliably distinguish between AI and human-authored messages
• Results suggest LLMs can provide cost-effective, scalable alternatives to traditional coaching without sacrificing quality

Why it matters: As healthcare faces staffing shortages and cost pressures, AI coaching offers a promising approach to deliver personalized weight management support at scale while maintaining the human-like qualities that drive engagement and behavior change.

Comparing Large Language Model AI and Human-Generated Coaching Messages for Behavioral Weight Loss