Systematic review and meta-analysis of the most common processed foods consumed by Iranian children.

Abstract

The trend of increasing overweight and obesity among children is a huge burden on health systems. In this regard, the growing availability of processed foods, often energy dense and nutrient poor, has become a major concern. Changing this trend will require evidence-based policies. This systematic review aimed to identify the most common processed/ultraprocessed foods consumed by 4-12-year-old Iranian children. We searched PubMed, Scopus and Web of science, as well as Persian scientific search engines, including Iran Research Information System, Scientific Information Database and Mag-Iran. We also assessed grey literature, that is, national studies and papers presented at relevant Iranian congresses. All data collected from studies were converted to daily servings (S/D). Mean and standard deviations of the included results were combined by performing meta-analysis with a random effects model. The I2 test was used to compute heterogeneity. Egger's test was used to assess publication bias. Ten studies with 67 093 children were included in this review. The meta-analysis demonstrated that the highest consumption of processed foods belonged to the sugars and sweets group with 8.01 S/D, followed by oils, and biscuits and cakes with 5.58 S/D and 3.33 S/D, respectively. Given the high consumption of less healthy processed foods, robust policies to support healthy eating and help improve Iranian children's food environment are recommended.