Evidence map›Paper›PMID 42884715›Full record

SynthesisNutrients2026

''Not a Universal Effect'': Polyunsaturated Fatty Acids and Cognition from Pregnancy to Adolescence-A Narrative Review and Nutritional Guidance for a Mediterranean Population.

Elissar El-Hayek, Marguerita Akiki, Marie-Joelle Chbat, Rita Keyrouz, Celine Mrad, Marc Bouji, Yonna Sacre

Abstract readReviewSystematic Review
In one paragraph

Synthesis in Nutrients, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

0numbers the graph read from it
0cells of the map it votes in
0citing 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

0 citing papers in PubMed.

No citing paper in PubMed yet.

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

7 authors.

Elissar El-HayekDepartment of Biology, Faculty of Arts and Sciences, Holy Spirit University of Kaslik (USEK), Jounieh P.O. Box 446, Lebanon.
Marguerita AkikiDepartment of Biology, Faculty of Arts and Sciences, Holy Spirit University of Kaslik (USEK), Jounieh P.O. Box 446, Lebanon.
Marie-Joelle ChbatDepartment of Biology, Faculty of Arts and Sciences, Holy Spirit University of Kaslik (USEK), Jounieh P.O. Box 446, Lebanon.
Rita KeyrouzDepartment of Biology, Faculty of Arts and Sciences, Holy Spirit University of Kaslik (USEK), Jounieh P.O. Box 446, Lebanon.
Celine MradDepartment of Nutrition and Food Sciences, Faculty of Arts and Sciences, Holy Spirit University of Kaslik (USEK), Jounieh P.O. Box 446, Lebanon.
Marc BoujiLaboratory of Cognitive and Molecular Neuroscience, Faculty of Sciences, Saint Joseph University of Beirut (USJ), North Campus, Tripoli P.O. Box 44, Lebanon.ORCID 0000-0001-8662-8381
Yonna SacreDepartment of Nutrition and Food Sciences, Faculty of Arts and Sciences, Holy Spirit University of Kaslik (USEK), Jounieh P.O. Box 446, Lebanon.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Polyunsaturated fatty acids (PUFAs), particularly docosahexaenoic acid (DHA) and eicosapentaenoic acid (EPA), are an important class of bioactive lipid mediators, essential for brain development from gestation through adolescence. Yet human studies evaluating the benefits of PUFAs for cognition remain inconsistent. This narrative review synthesizes studies from PubMed, Scopus, and Google Scholar examining PUFA intake, status, and supplementation in relation to cognitive and neurodevelopmental outcomes. It uses a thematic approach rather than the systematic search and screening protocol of a systematic review. This review also discusses the genetic determinants of PUFA metabolism and their association with neurodevelopmental outcomes, in addition to nutritional recommendations for Lebanon, a Mediterranean country. Animal models consistently show neuroprotective and anti-inflammatory effects of omega-3 PUFAs during critical windows of brain development. However, evidence from human studies evaluating the cognitive benefits of PUFAs remains limited and inconsistent, with more pronounced benefits in specific populations with low baseline PUFA status, learning difficulties, ADHD, or preterm birth. Genetic variation in genes involved in PUFA metabolism such as FADS1, FADS2, and ELOVL2/5 affects the capacity to synthesize long-chain PUFAs from dietary precursors, helping explain variability in response to omega-3 supplementation. Lebanon's traditional Mediterranean diet already supplies PUFAs and MUFAs; the real challenge is improving adherence to it through nutrition education and policy.

Indexed as

CognitionFatty Acids, UnsaturatedNutrition PolicyAdolescentAnimalsChildDelta-5 Fatty Acid DesaturaseDietary SupplementsDiet, MediterraneanFatty Acid DesaturasesFatty Acids, Omega-3FemaleHumansLebanonPregnancyDelta-5 Fatty Acid DesaturaseFADS1 protein, humanFADS2 protein, humanFatty Acid DesaturasesFatty Acids, Omega-3Fatty Acids, UnsaturatedadolescentschildrenDHAEPAFADS genetic polymorphismsfatty acid metabolismgene–diet interactionMediterranean dietmonounsaturated fatty acidspregnancy

Identifiers

PMID42884715
PMCPMC13667047

What OpenQuestion holds

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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 OpenQuestion graph.