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Population study: followed a group

Study of 595 children: ultra-processed food linked to larger body size at some ages

Heerman and colleagues · Pediatric obesity · 2023

Original title: Ultra-processed food consumption and BMI-Z among children at risk for obesity from low-income households.

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What the study found

Points to harm

Compared with low intake (300 kcals/day), high intake (1300 kcals/day) was linked to a 1.2 higher BMI-Z at 36 months in 3-year-olds and 0.6 higher in 4-year-olds. There was no clear difference in 5-year-olds or overall.

The study at a glance

Type of study
Population study: followed a group
Who or what was studied
595 people · 595 children, average age 4.3, from low-income households, mostly Hispanic
What was tested
High (1300 kcals/day) vs low (300 kcals/day) ultra-processed food intake at the start, then body size over 36 months
What it measured
The question itself: death, heart disease, diabetes and cancer
How long
156 weeks
Who has a stake
No stake declared
No competing interests declared.
Journal
Pediatric obesity, 2023
Source
PubMed record 37070567. This page is based on the abstract only.

How much this study counts

  • –Shows a link, not a cause: people chose their own habits, and other differences between them may explain the result.
  • ✓Followed people over time, so habits were recorded before the outcome happened.
  • •595 people.
  • ✓Measured the question itself: death, heart disease, diabetes and cancer.
  • ✓No competing interests declared.
  • •Summarized from the PubMed abstract only. The full paper may hold details the abstract leaves out.

✓ Strength– Limit• Note

These points come from fixed rules about the type of study, its size and length, what it measured, and who has a stake. Every study on Digestery gets the same rules.

Where this study sits

Each dot is one on-topic paper on this question. Steps near the top answer the question more directly.

↑ Stronger evidence

  1. Trials in people: death and chronic disease

    2

    1 no difference, 1 harm

  2. Trials in people: other measures

    3

    1 mixed, 1 no direction, 1 harm

  3. Trials in people: lab tests or safety

    1

    1 mixed

  4. Population studies

    17

    1 mixed, 16 harm

    ↑ This study is the ringed dot

  5. Blood levels and genes

    0

    None among the papers we read.

↓ Weaker evidence

  • Points to benefit
  • Mixed
  • No difference
  • No direction
  • Points to harm

How it fits with the other research

The short answer to “Are ultra-processed foods bad for your health?”

Linked to worse health; cause not proven.

Confidence: low. Based on 38 on-topic papers.

Read the full answer

Of the other 16 papers on the same step: 1 mixed, 15 harm. This one found harm. It agrees with most of them.

Other papers on the same step

See all 38 studies on this question

How this page was made

Label

First read of the abstract
Claude Sonnet
Independent second read
Claude Haiku
Differences settled
The reviewer corrected 3 fields after reading the abstract. Claude Opus 5.5.
Headline
Claude Sonnet, from the checked study record. A script checked its numbers and wording.
Numbers
Checked against the abstract by a script
“How much this study counts”
Fixed rules, the same for every study
Source check by a person
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