New study finds financial rewards enhance obesity interventions for teens
A recent study has demonstrated that adolescents suffering from severe obesity achieve a more significant reduction in body mass index (BMI) when meal-replacement therapy is supplemented with financial incentives, as opposed to meal-replacement therapy alone. These findings have been documented in an article published by JAMA Pediatrics.
Justin Ryder, PhD, an associate professor involved in both the Surgery Division of Pediatric Surgery and Pediatrics, collaborated on this research. Ryder highlighted the importance of developing more effective treatments for severe obesity, which currently impacts approximately 20% of children and adolescents in the U.S. The Centers for Disease Control and Prevention defines severe obesity as having a BMI at or above the 95th percentile for one’s age and gender. This condition predisposes individuals to a host of future health issues including adult obesity, cardiovascular diseases, and type two diabetes.
Previous studies have shown that meal replacement therapy (MRT), which replaces regular meals with controlled, pre-portioned meals totalling 1,200 calories per day, tends to be more effective than traditional lifestyle changes for reducing BMI in young people with severe obesity. In light of these findings, the recent study aimed to assess whether the addition of financial incentives would enhance the effectiveness of MRT.
“There’s literature for adults that supports that tying in financial incentives to weight loss or physical activity programs increases adherence, and so we wanted to see whether or not adding financial incentives to a behavioural/nutrition weight loss program using meal replacement therapy would increase adherence and through adherence, increase the efficacy of the treatment,” explained Ryder.
The research involved 126 adolescents, divided into two groups of 63 participants each. For one year, one group received MRT along with financial incentives based on their weight reduction from baseline, while the other group received only the MRT. At the end of the 52-week period, the group that received both MRT and financial incentives exhibited a greater decrease in BMI—by 6 percentage points—and a higher reduction in total body fat mass—4.8 kilograms compared to their counterparts who only received MRT.
Ryder added, “Using a cost-effectiveness analysis, we looked at mean fat mass lost between the two treatments and found that despite providing the additional meal replacements for per pound lost, it was cost-effective to do so.”
The study’s authors also noted the need for the development of interventions that maintain effectiveness beyond a one-year timeframe. “While financial incentives plus MRT appears to be a longer-term strategy than MRT alone, treatment withdrawal will likely result in BMI increase. As such, research is needed to identify strategies that are scalable and feasible in the long term given the chronic nature of obesity,” they mentioned.
This pivotal research was funded by multiple grants from the National Institute of Diabetes and Digestive and Kidney Diseases and the National Institutes of Health National Center for Advancing Translational Sciences. Financial support for the meal programs was provided by Healthy For Life Meals, contributing to the resources necessary for this comprehensive study.
