Ultra‑processed foods linked to youth obesity
- A systematic review of 23 studies covering 155,000 adolescents found higher ultra‑processed food intake linked to overweight. (quicknews.co.za) - The analysis pooled decades of cohort and cross‑sectional data across multiple countries. (quicknews.co.za) - Researchers emphasized population‑level shifts in food environments as drivers behind rising adolescent weight trends. (quicknews.co.za)
Ultra-processed foods are factory-made products built from refined ingredients and additives, and a new review says teens who eat more of them are more likely to be overweight or obese. (journals.plos.org) The review, published April 15 in *PLOS One*, pooled 23 studies covering about 155,000 adolescents and found that higher ultra-processed food intake was tied to 63% greater odds of overweight or obesity. (journals.plos.org) The authors searched PubMed, ScienceDirect, HINARI, Google and Google Scholar, included cohort and cross-sectional studies without language or date limits, and used a random-effects model to combine the results. (journals.plos.org) The paper lands as adolescent obesity keeps climbing worldwide: the World Health Organization says obesity among adolescents has quadrupled since 1990. (who.int) In the United States, the Centers for Disease Control and Prevention reported last month that obesity affected 21.1% of children and adolescents ages 2 to 19 in 2021 through 2023, with detailed trend tables showing high rates among ages 12 to 19 as well. (cdc.gov) In the NOVA system used in much of this research, ultra-processed foods are industrial formulations made mostly from extracted or synthesized ingredients rather than whole foods; examples commonly include soft drinks, packaged snacks, instant noodles and some ready-to-eat meals. (pmc.ncbi.nlm.nih.gov) Outside experts said the new paper shows a strong association, not proof that ultra-processed foods directly cause obesity, because low-cost convenience diets often travel with other pressures such as limited time, tighter budgets and less healthy food environments. (sciencemediacentre.org) Those experts also said the 23 studies did not all define “high” intake the same way, and some focused on categories like sugary drinks or fast food rather than identical food lists across countries. (sciencemediacentre.org) The authors said cutting ultra-processed food intake and promoting healthier diets should be part of obesity prevention efforts in adolescence, when excess weight is already linked to later risks such as type 2 diabetes, hypertension and liver disease. (journals.plos.org)
