The Claim

In adults with obesity, higher consumption of ultra-processed foods is associated with lower diet quality as measured by the Diet Quality Index–DQI-DFG, with individuals in the highest tertile (>35.4% of calories) having a lower mean diet quality score (37±10) compared to those in lower tertiles (45–47±9).

Source: Higher consumption of ultra-processed foods is associated with disordered eating symptoms and low-quality diet in adults with obesity

What the research says

Supports is higher

Support is ahead, but a single strong opposing study can change this.

Supports
42score
Challenges
0score

These are independent scores, not a percentage. Higher-grade studies count more, so a single strong opposing study can outweigh several weaker ones.

Correlation
1 study reviewed
In plain English

Adults with obesity who eat more ultra-processed foods have lower diet quality scores on the Diet Quality Index–DQI-DFG than those who eat less of these foods.

See the scientific wording

In adults with obesity, higher consumption of ultra-processed foods is associated with lower diet quality, as measured by the Diet Quality Index–DQI-DFG, with individuals in the highest tertile (>35.4% of calories) classified as having a low-quality diet (score 37±10) compared to intermediate quality in lower tertiles (45–47±9).

Why this might work

Eating a lot of ultra-processed foods means eating less of fruits, vegetables, and whole proteins. This lowers the amount of fiber and essential nutrients entering the gut, which changes the types of bacteria living there and reduces the production of beneficial compounds that help regulate appetite and metabolism.

Supported mechanismbased on 1 study

What the research says

1 study
  1. Study: Higher consumption of ultra-processed foods is associated with disordered eating symptoms and low-quality diet in adults with obesity

    People with obesity who ate more ultra-processed foods (like chips, sugary snacks, and processed meats) had much worse diets—eating fewer fruits, veggies, and proteins—than those who ate less of these foods.

Score breakdown, mechanism chain, raw evidence, ideal studies needed & 1 supporting studies

Fit Body Science verdict — we translate health claims into clear verdicts backed by peer-reviewed research.

Not medical advice. For informational purposes only. Always consult a qualified healthcare professional before making health decisions.