Remotely Delivered Behavioral Weight Loss Intervention Using an Ad Libitum Plant-Based Diet: Pilot Acceptability,...

Area of Science:

• Dietary interventions
• Behavioral science
• Digital health

Background:

• Traditional calorie-restricted diets often fail due to tracking difficulties.
• Whole food plant-based diets (WFPBDs) show promise for weight loss without calorie restriction.
• Existing WFPBD interventions are typically in-person and lack robust behavioral strategies.

Purpose of the Study:

• To assess the feasibility of a remotely delivered behavioral weight loss intervention using an ad libitum WFPBD.
• This pilot trial was the first to integrate digital behavioral strategies with a WFPBD for weight management.

Main Methods:

• A 12-week open pilot trial involving 15 participants with overweight or obesity.
• Participants received a program integrating behavioral weight loss and WFPBD via weekly web modules and phone coaching.
• Assessments conducted at baseline, 6 weeks, and 12 weeks.

Main Results:

• The intervention was highly acceptable (4.40/5) with low attrition (6.7%).
• 69% of participants achieved 5% weight loss (mean -5.89 kg).
• Quality of life benchmarks were met.

Conclusions:

• A digital behavioral weight loss intervention with a non-energy-restricted WFPBD is feasible and well-accepted.
• Minimal intervention time yielded clinically relevant weight loss and adherence.
• Results support larger trials for efficacy in weight loss, dietary change, and quality of life.