E278: Here's how screen time affects our kids' eating, activity, and mental health Podcast Por capa

E278: Here's how screen time affects our kids' eating, activity, and mental health

E278: Here's how screen time affects our kids' eating, activity, and mental health

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 Interview Summary So, you two, along with a number of other people in the field, wrote a chapter for a recently published book called The Handbook of Children and Screens. We discussed that book in an earlier podcast with its editors, Dmitri Christakis and Kris Perry, the executive director of the Children and Screens organization. And I'd like to emphasize to our listeners that the book can be downloaded at no cost. I'd like to read a quote if I may, from the chapter that the two of you wrote. 'Screen time continues to evolve with the advent of continuous and immersive video reels, voice activated assistance, social media influencers, augmented and virtual reality targeted advertising. Immersive worlds where children can virtually shop for food and beverages, cook or work in a fast-food outlet from a smartphone, a tablet, a computer, or an internet connected tv and more.' So as much as I follow the field, I still read that and I say, holy you know what. I mean that's just an absolutely alarming set of things that are coming at our children. And it really sounds like a tidal wave of digital sophistication that one could have never imagined even a short time ago. Amanda, let's start with you. Can you tell us a little bit more about these methods and how quickly they evolve and how much exposure children have? I think you're right, Kelly, that the world is changing fast. I've been looking at screen media for about 20 years now as a researcher. And in the earlier years, and Tom can attest to this as well, it was all about TV viewing. And you could ask parents how much time does your child spend watching TV? And they could say, well, they watch a couple shows every night and maybe a movie or two on the weekend, and they could come up with a pretty good estimate, 1, 2, 3 hours a day. Now, when we ask parents how much time their children spend with media, they have to stop and think, 'well, they're watching YouTube clips throughout the day. They're on their smartphone, their tablet, they're on social media, texting and playing all these different games.' It really becomes challenging to even get a grasp of the quantity of screen time let alone what kids are doing when they're using those screens. I will say for this book chapter, we found a really great review that summarized over 130 studies and found that kids are spending about three and a half or four hours a day using screens. Yet some of these studies are showing as high as seven or eight hours. I think it's probably under-reported because parents have a hard time really grasping how much time kids spend on screens. I've got a one-year-old and a five-year-old, and I've got some nieces and nephews and I'm constantly looking over their shoulder trying to figure out what games are they playing and where are they going online and what are they doing. Because this is changing really rapidly and we're trying to keep up with it and trying to make sure that screen time is a safe and perhaps healthy place to be. And that's really where a lot of our research is focused. I can only imagine how challenging it must be to work through that landscape. And because the technology advances way more quickly than the policies and legal landscape to control it, it really is pretty much whatever anybody wants to do, they do it and very little can be done about it. It's a really interesting picture, I know. We'll come back later and talk about what might be done about it. Tom, if you will help us understand the impact of all this. What are the effects on the diets of children and adolescents? I'm thinking particularly when Amanda was mentioning how many hours a day children are on it that three to four hours could be an underestimate of how much time they're spending. What did kids used to do with that time? I mean, if I think about when you and I were growing up, we did a lot of different things with that time. But what's it look like now? Well, that's one of the important questions that we don't really know a lot about because even experimental studies that I can talk about that look at reducing screen time have not been very good at being able to measure what else is going on or what substitutes for it. And so, a lot of the day we don't really know exactly what it's displacing and what happens when you reduce screen time. What replaces it? The assumption is that it's something that's more active than screen time. But, you know, it could be reading or homework or other sedentary behaviors that are more productive. But we really don't know. However, we do know that really the general consensus across all these studies that look at the relationship between screen time and nutrition is that the more time children spend using screens in general, the more calories they consume, the lower the nutritional quality of their diets and the greater their risk for obesity. A lot of these studies, as Amanda mentioned, were dominated by studies of television viewing, or looking at ...

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