Removing junk food advertisements from television could help Mexican children lose an average of 1.2 kilograms per year and reduce obesity rates by 8.3%, according to a 2026 research analysis published in JAMA Network Open. The study found that kids see about 2.8 minutes of unhealthy food ads daily while watching TV, and eliminating these advertisements could prevent approximately 271,000 cases of childhood obesity.
A new study from Mexico shows that removing advertisements for unhealthy foods and drinks from television could help children and teenagers maintain healthier weights. Researchers used computer models to predict what would happen if these ads disappeared completely. According to Gram Research analysis, they found that kids would eat about 47 fewer calories per day, lose an average of 1.2 kilograms in one year, and obesity rates could drop by 8.3%. This research suggests that governments should pass laws to protect children from seeing ads that encourage them to eat unhealthy foods, which could prevent hundreds of thousands of kids from becoming obese.
Key Statistics
A 2026 decision analytical model published in JAMA Network Open found that completely removing unhealthy food and beverage advertisements from television could reduce daily calorie intake by 47 calories per child and lead to an average weight loss of 1.2 kilograms in one year among Mexican children aged 10 to 17.
Research reviewed by Gram analyzed 2,834 Mexican children representing 17.7 million youth and found that removing junk food ads from TV could decrease obesity prevalence by 8.3%, preventing approximately 271,000 cases of childhood obesity.
According to a 2026 study in JAMA Network Open, Mexican children watch an average of 99.8 minutes of television daily and are exposed to approximately 2.8 minutes of unhealthy food advertising per day, with 79.2% of school-aged children regularly seeing these ads.
A 2026 computer simulation model found that even partial removal of unhealthy food advertisements from television (30% to 100% reduction) would produce dose-dependent health benefits, with greater reductions in ads leading to more significant decreases in childhood obesity rates.
The Quick Take
- What they studied: Whether removing junk food advertisements from television would help Mexican children and teenagers weigh less and reduce obesity rates.
- Who participated: The study included 2,834 children and teenagers aged 10 to 17 years from Mexico, representing about 17.7 million young people. Researchers used real data collected in 2022 and 2023 from national surveys about what kids actually watch on TV.
- Key finding: If unhealthy food and drink ads were completely removed from television, kids would eat about 47 fewer calories per day, lose an average of 1.2 kilograms in one year, and obesity rates would drop by 8.3%, preventing approximately 271,000 cases of childhood obesity.
- What it means for you: If your country or region passes laws to ban junk food advertising on TV, it could help your family and other families maintain healthier weights without having to try as hard. However, this assumes ads would be removed from TV only, social media and online ads would still exist, so families would need to stay aware of other advertising sources.
The Research Details
This study used a computer simulation model rather than watching real children over time. Researchers took actual data about how much TV Mexican kids watch (about 100 minutes per day) and how much time they spend seeing junk food ads (about 2.8 minutes per day). They then used mathematical equations to predict what would happen if those ads disappeared completely.
The researchers looked at national survey data from 2022 and 2023 to understand current viewing habits. They tested different scenarios, what if only 30% of ads were removed? What if 100% were removed? This helped them understand how much of a difference the ads actually make.
The study focused on children aged 10 to 17 years in Mexico, where most school-aged kids watch television regularly. The researchers represented their findings as applying to the entire population of Mexican youth, not just the 2,834 kids they studied.
This research approach matters because it’s hard to do a real experiment where you actually remove ads and watch kids for years. Instead, computer models let scientists predict outcomes quickly and test many different scenarios. This type of study helps governments decide whether passing new laws would be worth it before they make big changes.
This study was published in JAMA Network Open, a respected medical journal. The researchers used real data from national surveys rather than making up numbers. However, the study is a prediction model, not a real-world test, so actual results might differ. The model assumes that removing TV ads is the only change, it doesn’t account for kids seeing ads on social media, YouTube, or other digital platforms. The results also assume that reducing ad exposure would directly reduce how much kids eat, which may not be 100% accurate in real life.
What the Results Show
The main finding was that completely removing unhealthy food and beverage advertisements from television would reduce daily calorie intake by about 47 calories per child. While this might sound small, it adds up over time. The model predicted that over one year, this would lead to an average weight loss of 1.2 kilograms (about 2.6 pounds) per child.
More importantly, obesity rates among Mexican children would drop by 8.3%. This might not sound like much, but it translates to preventing approximately 271,000 children from becoming obese. That’s a huge number of kids who could avoid serious health problems like diabetes, heart disease, and joint problems.
The study assumed that 79.2% of Mexican children are exposed to television advertising. The researchers also tested what would happen with partial removal of ads (30% to 100% removal), and found that even partial removal would have benefits, though smaller ones. The more ads that were removed, the greater the health benefit.
The researchers found that Mexican children watch an average of 99.8 minutes of television per day, that’s about 1 hour and 40 minutes. During that time, they see about 2.8 minutes of advertisements for unhealthy foods and drinks. This means that roughly 3% of their TV time is spent watching junk food ads. The study also showed that the relationship between ad exposure and eating habits appears to be dose-dependent, meaning more exposure to ads leads to more unhealthy eating.
Previous research has shown that TV advertising influences what children eat and contributes to childhood obesity. This study builds on that knowledge by predicting how much of a difference removing these ads would actually make. Other countries have already started restricting junk food advertising to children, this research provides evidence that such restrictions could have meaningful health benefits. The findings align with similar studies from other countries that show advertising restrictions can help reduce childhood obesity.
This study is a computer prediction model, not a real-world experiment, so the actual results might be different. The model assumes that removing TV ads is the only change happening, but in reality, kids are exposed to junk food ads on social media, YouTube, streaming services, and other digital platforms that weren’t included in this analysis. The study also assumes that reducing ad exposure directly reduces eating habits, which may not be perfectly accurate for every child. Additionally, the model doesn’t account for other factors that influence weight, like physical activity, family eating habits, or access to healthy food. Finally, the study was done in Mexico, so results might not apply exactly the same way to other countries with different TV viewing habits and advertising practices.
The Bottom Line
Based on this research, governments should consider passing laws to restrict or ban advertisements for unhealthy foods and beverages on television, especially during times when children are watching. This is a moderate-to-strong recommendation because the evidence shows meaningful health benefits. Families can also help by limiting children’s TV time and teaching kids to think critically about advertisements. However, families should know that removing TV ads alone won’t solve childhood obesity, healthy eating, physical activity, and access to nutritious food are also essential.
Parents, teachers, and government officials should care about this research because it affects children’s health. Kids aged 10 to 17 are the most directly impacted. Policymakers in countries with high childhood obesity rates should pay special attention. This research is most relevant to countries like Mexico where TV is a major source of media for children. However, the findings may also apply to other countries with similar TV viewing patterns. People who work in public health, nutrition, or child welfare should also find this research valuable.
According to this model, the benefits would start appearing within weeks as children consume fewer calories, but the most noticeable weight changes would take several months to a year. The 1.2-kilogram average weight loss is predicted over 12 months. However, individual children might see results faster or slower depending on their current habits and other lifestyle factors. It’s important to remember this is a prediction, not a guarantee.
Frequently Asked Questions
How much weight would kids lose if junk food ads were banned from TV?
According to a 2026 study, children would lose an average of 1.2 kilograms (2.6 pounds) per year if unhealthy food ads were completely removed from television. The model predicted this based on kids eating about 47 fewer calories daily from reduced ad exposure.
What percentage of kids in Mexico see junk food advertisements on TV?
Research shows that 79.2% of Mexican children aged 10 to 17 are regularly exposed to unhealthy food and beverage advertisements on television. These children see approximately 2.8 minutes of such ads daily while watching an average of 100 minutes of TV per day.
Would banning food ads on TV actually reduce childhood obesity?
A 2026 research model suggests that completely removing unhealthy food ads from TV could reduce obesity rates by 8.3% among Mexican children, preventing about 271,000 cases of obesity. However, this is a prediction model, not a real-world test, so actual results may vary.
How do TV advertisements for junk food affect children’s eating habits?
Research shows a dose-response relationship: the more unhealthy food ads children see, the more they tend to eat unhealthy foods. A 2026 study found Mexican kids see 2.8 minutes of junk food ads daily, contributing to poor dietary habits and weight gain over time.
What should parents do to protect kids from food advertising?
Parents can limit TV time, teach children to think critically about ads, and provide healthy snack alternatives while watching. However, since ads also appear on social media and streaming services, families need awareness across all media platforms, not just television.
Want to Apply This Research?
- Track daily TV viewing time and note which advertisements for unhealthy foods appear during your child’s favorite shows. Record the specific products advertised and how often they appear. This creates awareness of advertising exposure and helps identify patterns.
- Use the app to set daily TV time limits for children and create a list of healthy snack alternatives to have available when kids watch television. When an unhealthy food ad appears, pause and discuss with your child why the ad is trying to convince them to eat that food, teaching media literacy skills.
- Track weekly TV viewing hours and monthly weight measurements (if appropriate). Monitor changes in snack preferences and food requests from children. Note any changes in eating habits as TV time decreases. Compare these metrics over 3-month periods to see if reducing ad exposure correlates with healthier choices.
This research is a computer prediction model, not a real-world study, so actual results may differ from projections. The findings apply specifically to Mexican children and may not be identical in other countries. This study does not account for digital advertising on social media, streaming services, or other online platforms. Reducing childhood obesity requires multiple approaches including healthy eating, physical activity, and access to nutritious food, removing ads alone is not a complete solution. Parents should consult with pediatricians or registered dietitians for personalized nutrition and health advice for their children. This article is for informational purposes and should not replace professional medical guidance.
This research translation is published by Gram Research, the science division of Gram, an AI-powered nutrition tracking app.
