Social Media May Sway Kids To Eat More Cookies, Calories: Study

by NCN Health And Science Team Posted on March 4th, 2019

Any kid with a cellphone or social media account is likely to be following one or more of thousands of social media influencers who regularly post about what they do, what they like and what they eat.

Generally, these are people in their 20s who are successful, outgoing, positive, energetic and “highly appealing” to the younger crowd, according to Anna Coates, a doctoral student at the School of Psychology at the University of Liverpool in the U.K.

Coates wanted to know just how much kids’ diets could be influenced by these vloggers. So she and her colleagues conducted a study involving 176 children ages 9 to 11. The kids were divided into three groups. All the groups were shown images from real YouTube videos posted by popular vloggers in the U.K.

One group viewed vloggers who were not eating but holding an iPhone or sneaker, for example. Another group viewed images of vloggers eating healthy snacks like fruits or carrots. The third group viewed images of junk food being consumed, which included items like Mars chocolate bars, chocolate biscuits, and cookies.

After viewing the images, children had 10 minutes to choose between healthy snacks (carrot sticks and grapes) and unhealthy snacks (jelly beans and chocolate buttons). Watching the social media influencers consume healthy snacks did not make a significant difference in which foods — or how much — the children chose to eat after viewing the images.

But for those children who viewed vloggers eating unhealthy snacks, it was a different story: They consumed 32 percent more calories from unhealthy snacks compared with the children who viewed no food being eaten. And that translated to an extra 90 calories per day.

“It only takes an extra 70 calories a day for a child of normal weight to become overweight,” says Dr. Natalie Muth, a spokesperson for the American Academy of Pediatrics.

As a pediatrician, Muth says many of her patients are overweight or obese, which puts them at risk for a variety of diseases later in life — or even while they’re still in childhood: She says she’s seeing an increase in the number of children diagnosed with Type 2 diabetes, a disease formerly suffered by mostly adults.

It’s well known that junk food ads on TV can strongly influence what kids want to eat. Muth worries that the added influence of social media will exacerbate an already unhealthy food environment, where kids are constantly being “bombarded by media images to eat junk food and drink unhealthy sugary drinks.”

Coates and her co-authors conclude that food marketing restrictions should be applied to new forms of digital marketing, particularly on social media, where “vulnerable young people spend a lot of their time.” More research is needed to understand the impact of digital food marketing.

In the meantime, Coates suggests that parents prepare their children for the junk food onslaught by talking with them about what’s healthy and what’s not. Her study is published this week in the journal Pediatrics.

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