The U.S. Preventive Services Task Force (USPSTF) is recommending that clinicians provide comprehensive, intensive behavioral interventions for children 6 years and older who have a high body mass index (BMI) at or above the 95th percentile (for age and sex) or refer those patients to an appropriate provider.
One in five children (19.7%) and adolescents ages 2-19 in the United States are at or above this range, based on Centers for Disease Control and Prevention growth charts from 2000, the task force wrote in its statement. The rate of BMI increase nearly doubled in this age group during the COVID pandemic, compared with prepandemic levels.
Publishing their recommendations in JAMA, the task force, with lead author Wanda K. Nicholson, MD, MPH, MBA, with the Milken Institute of Public Health, George Washington University, Washington, D.C., also noted that the prevalence of high BMI increases with age and rates are higher among children from lower-income families. Rates are also higher in Hispanic/Latino, Native American/Alaska Native and non-Hispanic Black children.
At Least 26 Hours of Interventions
It is important that children and adolescents 6 years or older with a high BMI receive intensive interventions for at least 26 contact hours for up to a year, as evidence showed that was the threshold for weight loss, the task force said.
Based on its evidence review, the USPSTF assigned this recommendation a B grade indicating “moderate certainty… of moderate net benefit.” The task force analyzed 50 randomized clinical trials (RCTs) (n=8,798) that examined behavioral interventions. They also analyzed eight trials that assessed pharmacotherapy interventions: liraglutide (three RCTs), semaglutide (one RCT), orlistat (two RCTs) and phentermine/topiramate (two RCTs). Five trials included behavioral counseling with the medication or placebo.
These new recommendations also reaffirm the task force’s 2010 and 2023 recommendations.
Effective interventions had multiple components. They included interventions targeting both the parent and child (separately, together or both); group sessions; information about healthy eating, information on reading food labels, and safe exercising; and interventions for encouraging behavioral changes, such as monitoring food intake and problem solving, changing physical activity behaviors, and goal setting.
These types of interventions are often delivered by multidisciplinary teams, including pediatricians, exercise physiologists or physical therapists, dietitians, psychologists, social workers, or other behavioral specialists.
Personalizing Treatment for Optimal Benefit
“The time to prevent and intervene on childhood obesity is now, and the need to start with ILT [intensive lifestyle therapy] is clear,” Roohi Y. Kharofa, MD, with the department of pediatrics, University of Cincinnati College of Medicine, Cincinnati, Ohio, and colleagues wrote in a related editorial.
However, the editorialists noted it will be important to personalize the level of interventions as ILT won’t be enough for some to prevent serious outcomes. For such patients, bariatric surgery or pharmacotherapy may need to be considered as well.
Ways to Reach the 26 Hours
Dr. Kharofa and coauthors pointed out that, while the threshold of at least 26 contact hours is associated with significant improvement in BMI (mean BMI difference, –0.8; 95% CI, –1.2 to –0.4), and while it’s important to now have an evidence-based threshold, the number may be disheartening given limits on clinicians, staff, and resources. The key may be prescribing physical activity sessions outside the health system.
For patients not interested in group sports or burdened by participation fees, collaboration with local community organizations, such as the YMCA or the Boys & Girls Club, could be arranged, the authors suggested.
“The inability to attain 26 hours should not deter patients or practitioners from participating in, referring to, or implementing obesity interventions. Rather, clinical teams and families should work together to maximize intervention dose using clinical and community programs synergistically,” they wrote.
They noted that the USPSTF in this 2024 update found “inadequate evidence on the benefits of pharmacotherapy in youth with obesity, encouraging clinicians to use ILT as the primary intervention.”
What About Medications?
New since the previous USPSTF review, several new medications have been approved for weight loss in pediatric populations, Elizabeth A. O’Connor, PhD, with The Center for Health Research, Kaiser Permanente Northwest, Portland, Oregon, and colleagues noted in their updated evidence report.
They noted that the 2023 Clinical Practice Guideline developed by the American Academy of Pediatrics states that clinicians “may offer children ages 8 through 11 years of age with obesity weight loss pharmacotherapy, according to medication indications, risks, and benefits, as an adjunct to health behavior and lifestyle treatment.”
However, Dr. O’Connor and coauthors wrote, the evidence base for each agent is limited and there is no information in the literature supporting their findings on harms of medication use beyond 17 months.
“For pharmacotherapy, when evidence was available on weight maintenance after discontinuation, weight rebounded quickly after medication use ended,” the authors wrote. “This suggests that long-term use is required for weight maintenance and underscores the need for evidence about potential harms from long-term use.”
Changes in Investment, Food, Government Priorities Are Needed
In a separate accompanying editorial, Thomas N. Robinson, MD, MPH, with Stanford University’s Center for Healthy Weight and General Pediatrics Department in Palo Alto, California, and Sarah C. Armstrong, MD, with the Duke Center for Childhood Obesity Research, Chapel Hill, North Carolina, wrote that experience to date has shown that current approaches aren’t working and, in fact, pediatric obesity rates are worsening.
“After nearly 15 years of authoritative, evidence-backed USPSTF recommendations for effective interventions for children with high BMI, it is long past time to implement them,” they wrote.
But changes will need to go far beyond clinicians’ offices and priorities must change at local, state, and federal levels, Dr. Robinson and Dr. Armstrong wrote. A shift in priorities is needed to make screening and behavioral interventions available to all children and teens with obesity.
Public policies, they wrote, must address larger issues, such as food content and availability of healthy foods, transportation innovations, and ways to make active lifestyles available equitably.
The authors said that strategies may include taxing sugary drinks, regulating marketing of unhealthful foods, crafting legislation to regulate the nutritional content of school meals, and creating policies to reduce poverty and address social drivers of health.
“A synergistic combination of effective clinical care, as recommended by the USPSTF, and public policy interventions is critically needed to turn the tide on childhood obesity,” Dr. Robinson and Dr. Armstrong wrote.
The full recommendation statement is available at the USPSTF website or the JAMA website.
One coauthor of the recommendation statement reported receiving publications and federal grand funding to his institution for the relationship between obesity and the potential effect of nutrition policy interventions on cardiovascular disease and cancer and for a meta-analysis of the effect of dietary counseling for weight loss. The authors of the evidence report had no relevant conflicts of interest. Dr. Kharofa reported receiving grants from Rhythm Pharmaceuticals outside the submitted work. Dr. Robinson has served on the scientific advisory board of WW International (through December 2022). Dr. Armstrong has served as chair of the Section on Obesity, American Academy of Pediatrics; and is a coauthor of the Clinical Practice Guidelines for the Evaluation and Treatment of Children and Adolescents with Obesity.
This article originally appeared on MDedge.com, part of the Medscape Professional Network.
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