Overview
- A PLOS One meta-analysis on ultra-processed foods, which are factory-made products high in added sugar, salt, unhealthy fats, and additives, found teens with higher intake had 63% greater odds of overweight or obesity, with the newest studies showing about double the odds.
- The review combined 23 observational studies across 16 countries and about 155,000 adolescents to assess the link between diet and weight.
- The authors warn the data show association rather than proof of cause, and they note wide differences in how studies measured diets and obesity.
- A UK Research and Innovation consultation reports the public feels uninformed about these foods, worries about harms to child health, backs swift action, and trusts publicly funded researchers more than food companies.
- The UK report says ultra-processed foods provide 56% of national calories and 68% for teenagers, which could intensify pressure for advertising rules and clearer, research-led guidance on healthier choices.