Research

Macro partitioning

Among vegan dieters, higher consumption of ultra-processed foods (UPF) is associated with reduced odds of inadequate protein intake, whereas higher consumption of unprocessed/minimally processed foods (UMPF) is associated with increased odds of inadequate protein intake.

If you are vegan, do not strictly avoid all ultra-processed foods (UPF) if it compromises your protein intake. This study found that vegans who consumed more UPF (like textured soy protein or supplements) were much less likely to have inadequate protein intake compared to those who ate mostly unprocessed foods. To ensure you get enough protein, consider including protein supplements or textured soy products, as unprocessed plant proteins alone may require impractical volumes to meet requirements.

ModerateQualifiesMEDIUM confidence
Adjusted logistic regression models showed that consuming protein supplements or textured soy protein, higher caloric, and higher UPF intakes were associated with reduced odds of inadequate protein intake, and that higher UMPF intakes were associated with increased odds of inadequate protein intake.
Alice Erwig Leitão et al. · medRxiv · 2023

Why this rating

Cross-sectional observational study with self-reported data and convenience sampling limits causal inference.

Source

Consuming less ultra-processed food is associated with inadequate protein intake among vegan dieters

Alice Erwig Leitão et al. · medRxiv · 2023

DOI 10.1101/2023.12.11.23299823

cross_sectional · n=774
Read the paper
DOI resolved against Crossref · corpus check 2026-06-10

This is one finding among thousands. Every one is graded and traced to its source, so you can see what the evidence actually supports. Browse the research →