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Efficacy of a Commercial Weight Management Program Compared With a Do-It-Yourself Approach: A Randomized Clinical

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Commercial weight management programs significantly improved weight loss compared to do-it-yourself (DIY) approaches. Adults in commercial programs achieved greater weight reduction and were more likely to reach 5% body weight loss at 3 and 12 months.

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Area of Science:

  • Obesity research
  • Behavioral medicine
  • Public health interventions

Background:

  • Obesity is a prevalent health concern requiring accessible and effective management strategies.
  • Commercial weight management programs offer a potentially scalable solution, but rigorous evaluations are limited.
  • There is a need to compare commercial programs with self-directed (DIY) weight loss methods.

Purpose of the Study:

  • To compare weight change in adults randomized to a commercial weight management program versus a DIY approach.
  • To evaluate the efficacy of a commercial program with reduced dietary self-monitoring requirements.

Main Methods:

  • A 1-year randomized clinical trial involving 373 adults (BMI 25-45) across the US, Canada, and UK.
  • Participants were assigned to either a commercial weight management program or a DIY weight loss approach.
  • Primary outcomes included weight change at 3 and 12 months, analyzed on an intention-to-treat basis.

Main Results:

  • At 12 months, the commercial program group lost an average of -4.4 kg compared to -1.7 kg in the DIY group (mean difference -2.6 kg).
  • A significantly higher percentage of participants in the commercial program achieved 5% body weight loss at 3 months (40.7% vs 18.6%) and 12 months (42.8% vs 24.7%).
  • Retention rates were high in both groups, with 88.8% in the commercial group and 95.7% in the DIY group at 12 months.

Conclusions:

  • Commercial weight management programs with reduced self-monitoring are more effective for weight loss than DIY approaches.
  • These findings support the use of commercial programs as a viable option for obesity management.
  • The study provides valuable data on the comparative effectiveness of different weight loss strategies.