Research
Energy balance
Ultra-processed foods are sold in portions up to 5 times larger than when first introduced.
This highlights the need for awareness regarding the increasing portion sizes of ultra-processed foods.
StrongSupportsmedium confidence
all still sold portions of ultra-processed foods in up to 5-times-larger sizes than when first introduced.
Why this rating
The study provides a direct comparison of portion sizes over time.
Source
Portion Sizes of Ultra-Processed Foods in the United States, 2002 to 2021
Lisa R. Young et al. · American Journal of Public Health · 2021
DOI 10.2105/ajph.2021.306513
otherCited 30×
Read the paper DOI resolved against Crossref · corpus check 2026-06-10
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