The effect of a primary care-based Medical Weight Loss Program on weight loss and anthropomorphic metrics

Background: Diet and lifestyle intervention programs have been shown to be effective in decreasing obesity/overweight and many associated comorbidities in specialty research settings.There is very little information however as to the efficacy of such programs conducted in usual/typical primary care practices. We analysed effectiveness of the Medical Weight Loss Program (MWLP) designed to specifically address overweight/obesity in the setting of an urban academic primary care practice. Objective: To determine whether participation in the MWLP within a general primary care setting can result in weight loss. Methods: A retrospective medical chart review of patients treated in MWLP and a control group of patients with obesity receiving regular care in the general primary care setting. From the practice database (1 April 2015-31 March 2016), 209 patients (.18 years old) who participated in the MWLP were identified; 265 controls were selected from the remaining population based on the presence of the obesity-related diagnoses. Results: MWLP patients lost on average 2.35 +/- 5.88 kg in 6 months compared to their baseline weight (P< 0.0001). In contrast, the control group demonstrated a trend of gaining on average 0.37 +/- 6.03 kg. Having three or more visits with the MWLP provider within 6 months after program initiation was the most important factor associated with successful loss of at least 5% of the baseline weight. Weight loss also correlated with a decrease in abdominal girth. Conclusion: MWLP integrated into the general primary care practice may potentially be an effective model for managing obesity and related morbidities.