<p>This letter addresses the study by van Es et al. on multivitamin adherence after bariatric surgery and the implementation of patient-centered care (PCC) by healthcare professionals (HCPs). The authors commend the study’s efforts to advance PCC but offer critical insights into the limitations of its methodology. The letter highlights the need for a more nuanced understanding of how different healthcare providers apply PCC, the potential biases introduced by the knowledge of observation, and the subjectivity inherent in the observational data collection method. The authors suggest that incorporating patient feedback and using a more objective approach could improve the study’s conclusions. Overall, the letter calls for further improvements in PCC practices and research on multivitamin adherence after bariatric surgery.</p>