Background Obesity and being overweight are both significant risk factors for multiple chronic conditions. Primary care physicians are in a position to provide health behavior counseling to the majority of US adults, yet most report insufficient training to deliver effective counseling for obesity.

Objective Teachable moments (TM) are opportunities created through physician–patient interaction and used to encourage patients to change unhealthy behaviors. We examine the effectiveness of TMs to increase patients’ recall of advice, motivation to modify behavior, and behavior change. Methods A mixed-method observational study of 811 patient visits to 28 primary care clinicians used audio-recordings of visits to identify TMs and other types of advice in health behavior change talk. Patient surveys assessed smoking, exercise, fruit/vegetable consumption, height, weight, and readiness for change prior to the observed visit and 6-weeks post-visit. Results Compared to other identified categories of advice (i.e. missed opportunities or teachable moment attempts), recall was greatest after TMs occurred (83% vs. 49–74%). TMs had the greatest proportion of patients change in importance and confidence and increase readiness to change; however differences were small. TMs had greater positive behavior change scores than other categories of advice; however, this pattern was statistically non-significant and was not observed for BMI change. Conclusion TMs have a greater positive influence on several intermediate markers of patient behavior change compared to other categories of advice. Practice implications TMs show promise as an approach for clinicians to discuss behavior change with patients efficiently and effectively.

National guidelines have been established to support the role of primary care physicians in addressing obesity. Preparing primary care residents to recognize and treat overweight/obesity has been identified as an essential component of postgraduate medical training that is currently lacking. This study aims to identify how primary care residency programs are preparing physicians to counsel about obesity, nutrition, and physical activity (ONPA) and to examine program members' perspectives regarding the place of ONPA counseling in the curriculum, and its relevance in primary care training. Using mixed methods, we collected and analyzed data on 25 family medicine, internal medicine, and obstetrics/gynecology residency programs across Ohio. Programs averaged 2.8 hours of ONPA-related didactics per year. Ten programs (42%) taught techniques for health behavior counseling. Having any ONPA-related didactics was associated with greater counseling knowledge (p = .01) among residents but poorer attitudes (p < .001) and poorer perceived professional norms (p = .004) toward ONPA counseling. Findings from interview data highlighted similar perceived barriers to ONPA counseling across all three specialties but variation in perception of responsibility to provide ONPA counseling. While widespread expectations that primary care physicians counsel their overweight and obese patients prevail, few residency programs provide training to support such counseling.