Evidence map›Paper›PMID 40416032›Full record

ReviewJMA journal2025

Saturated Fat Restriction for Cardiovascular Disease Prevention: A Systematic Review and Meta-analysis of Randomized Controlled Trials.

Satoru Yamada, Tomomi Shirai, Sakiko Inaba, Gaku Inoue, Minami Torigoe, Naoto Fukuyama

Abstract readReview
In one paragraph

Review in JMA journal, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers.

0numbers the graph read from it
0cells of the map it votes in
3citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

3 citing papers in PubMed.

  1. Review
  2. Review
  3. Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

6 authors.

Satoru YamadaDiabetes Center, Kitasato University, Kitasato Institute Hospital, Tokyo, Japan.
Tomomi ShiraiDiabetes Center, Kitasato University, Kitasato Institute Hospital, Tokyo, Japan.
Sakiko InabaDepartment of Nutritional Science, Tokyo University of Agriculture, Tokyo, Japan.
Gaku InoueDiabetes Center, Kitasato University, Kitasato Institute Hospital, Tokyo, Japan.
Minami TorigoeDepartment of Nutritional Science, Tokyo University of Agriculture, Tokyo, Japan.
Naoto FukuyamaDepartment of Nutritional Science, Tokyo University of Agriculture, Tokyo, Japan.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Background: The recommendation to limit dietary saturated fat intake is primarily drawn from observational studies rather than randomized controlled trials of cardiovascular disease prevention. Thus, we aimed to investigate the efficacy of saturated fat reduction in preventing mortality and cardiovascular diseases. Methods: In this systematic review and meta-analysis of randomized controlled trials, Cochrane CENTRAL, PubMed, and Ichu-shi databases were searched for articles up to April 2023. Randomized controlled trials on saturated fat reduction to prevent cardiovascular diseases were selected. Cardiovascular and all-cause mortality and cardiovascular outcomes were evaluated. Changes in electrocardiography or coronary angiography findings were excluded because they could be evaluated arbitrarily. Two or more reviewers independently extracted and assessed the data. A random-effects meta-analysis was performed. Results: Nine eligible trials with 13,532 participants were identified (2 were primary and 7 were secondary prevention studies). No significant differences in cardiovascular mortality (relative risk [RR] = 0.94, 95% confidence interval [CI]: 0.75-1.19), all-cause mortality (RR = 1.01, 95% CI: 0.89-1.14), myocardial infarction (RR = 0.85, 95% CI: 0.71-1.02), and coronary artery events (RR = 0.85, 95% CI: 0.65-1.11) were observed between the intervention and control groups. However, owing to limited reported cases, the impact of stroke could not be evaluated. Conclusions: The findings indicate that a reduction in saturated fats cannot be recommended at present to prevent cardiovascular diseases and mortality. Clinical trials are needed to evaluate the effects of saturated fat reduction under the best possible medical care, including statin administration. Systematic review registration number: This systematic review and meta-analysis was registered with the International Prospective Register of Systematic Reviews (CRD42023428498).

Indexed as

all-cause mortalitycardiovascular mortalitymeta-analysissaturated fatty acidsystematic review

Identifiers

PMID40416032
PMCPMC12095860

What Socratic holds

Textmetadata
LicenceCC BY
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the Socratic graph.