From the Journals

USPSTF recommends screening children, adolescents for obesity

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Interventions often impractical, unaffordable

This USPSTF recommendation simply confirms what pediatric clinicians always do in the everyday care for children and adolescents: monitor growth, counsel on healthy lifestyles, and refer for specialized care when appropriate.

Intensive behavioral interventions are impractical for many families and frequently aren’t covered by insurance. At best, implementing this recommendation will have only a modest effect on obesity in the United States. At worst, it could divert attention and resources away from population-health approaches to prevention and toward weight management programs that are not well equipped to meet the demand and very often don’t exist within local communities.

Improving neighborhood walkability, increasing the availability of healthy foods, and providing safe physical spaces would be more effective at reducing childhood obesity, as would improving school nutrition and curtailing the marketing of sugar-sweetened drinks and other unhealthy foods to children.

Rachel L. J. Thornton, MD, PhD, Raquel G. Hernandez, MD, MPH; Tina L. Cheng, MD, MPH, are in the department of pediatrics at Johns Hopkins University, Baltimore. They reported having no relevant financial disclosures. They made these remarks in an editorial accompanying the USPSTF report (JAMA. 2017;317:2378-80).


 

FROM JAMA

Children and adolescents aged 6 years and older should be screened for obesity and referred to comprehensive, intensive behavioral interventions with at least 26 hours of intervention contact, according to a U.S. Preventive Services Task Force Recommendation Statement that was published online June 20 in JAMA.

This updated recommendation is largely consistent with the previous 2010 recommendation “but includes the word ‘adolescents’ to further clarify the population to which this recommendation applies,” according to a press release accompanying the Recommendation Statement and the Evidence Report on which it is based.

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After reviewing 45 studies involving 7,099 overweight or obese children and adolescents, the USPSTF concluded that the magnitude of benefit of screening for obesity in this age group and referring affected patients to appropriate behavioral interventions was “moderate,” said David C. Grossman, MD, chair of the USPSTF and pediatrician and senior investigator at Kaiser Permanente Washington Health Research Institute, Seattle, and his associates.

The behavioral interventions that proved most beneficial included at least 26 hours of contact over a period of 2-12 months. Those that included 52 or more hours of contact achieved even greater weight loss, as well as some improvements in cardiovascular and metabolic risk factors (JAMA. 2017 Jun 20. doi: 10.1001/jama.2017.6803).

In general, children and adolescents who received intensive behavioral intervention showed absolute reductions in BMI z scores of 0.20 and maintained their baseline weight within approximately 5 pounds, while control subjects showed small or no reductions in BMI z scores and typically gained a mean of 5-17 pounds.

The components of these comprehensive interventions varied, but the most successful ones included sessions involving both the child and the parent (separately, together, or both); offered both family and group sessions; provided education regarding healthy eating, exercising, and reading food labels; encouraged stimulus-control measures such as limiting access to unhealthy foods and limiting screen time (that is, physical inactivity); and included supervised physical activity. Additional beneficial components are assisting patients to identify and accomplish goals, self-monitor, and problem-solve, as well as teaching them coping skills and addressing their body image.

In contrast to behavioral interventions, pharmacotherapy was not endorsed by the USPSTF. The current evidence was deemed inadequate to determine whether the slight weight loss achieved with pharmacotherapy is clinically significant and whether it outweighs the harms of the medications.

The two agents currently used in this regard are metformin, which is not Food and Drug Administration–approved for this purpose, and orlistat, which is approved for patients aged 12 years and older. Orlistat in particular frequently causes adverse events including fatty or oily stools, abdominal pain or cramping, flatus with stool discharge, and fecal incontinence, Dr. Grossman and his associates said.

The USPSTF is an independent voluntary group supported by the U.S. Agency for Healthcare Research and Quality as mandated by Congress. The authors’ conflicts of interest are available at https://www.uspreventiveservicestaskforce.org/Page/Name/conflict-of-interest-disclosures.

It is not surprising that there are so many overweight and obese children, despite the fact that in order to prevent bad feelings, children have to be much more overweight than adults to be classified as obese or overweight.

If one is waiting until age 6 years to screen for obesity, that horse will be long out of the barn. The problem begins when the rapid weight gain of infants does not slow down in the 2nd and 3rd years of life. This is also when bad food choices and eating habits often begin.

The other problem is that body mass index is a terrible tool and so is any indicator that tries to define obesity using only height and weight. None of these distinguish between the muscular child and the slender child with a large belly. Waist to height or body volume measurements are far better indicators.

Lastly, parents have come to see the mildly overweight child as the norm because so many children are. Until parents see pictures of children from a few decades ago and are educated as to what normal looks like, we will have great difficulty making a dent in this problem.

Richard H. Feuille Jr., MD

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