Evidence map›Paper›PMID 26878105›Full record

SynthesisThe British journal of nutrition2016

Higher PUFA and n-3 PUFA, conjugated linoleic acid, α-tocopherol and iron, but lower iodine and selenium concentrations in organic milk: a systematic literature review and meta- and redundancy analyses.

Dominika Średnicka-Tober, Marcin Barański, Chris J Seal, Roy Sanderson, Charles Benbrook, Håvard Steinshamn, Joanna Gromadzka-Ostrowska, Ewa Rembiałkowska, Krystyna Skwarło-Sońta, Mick Eyre and 15 more

Open access · hybridAbstract readMeta-AnalysisSystematic Review
In one paragraph

Synthesis in The British journal of nutrition, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 59 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
59citing papers in PubMed, 2 pooled it
20.6field-weighted citation impact, top 1% of its field
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

59 citing papers in PubMed, 2 syntheses or guidelines pooled it, 202 citations in OpenAlex.

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  6. Supplementing Sacha Inchi (Veterinary sciences · 2025
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4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

25 authors at 13 institutions in 9 countries.

Dominika Średnicka-Tober1Nafferton Ecological Farming Group (NEFG),School of Agriculture, Food and Rural Development,Newcastle University,Nafferton Farm,Stocksfield,Northumberland NE43 7XD,UK.
Marcin Barański1Nafferton Ecological Farming Group (NEFG),School of Agriculture, Food and Rural Development,Newcastle University,Nafferton Farm,Stocksfield,Northumberland NE43 7XD,UK.
Chris J Seal2School of Agriculture, Food and Rural Development,Human Nutrition Research Centre,Newcastle University,Agriculture Building,Kings Road,Newcastle upon Tyne NE1 7RU,UK.ORCID http://orcid.org/0000-0001-6313-6691
Roy Sanderson3School of Biology,Newcastle University,Ridley Building,Newcastle upon Tyne NE1 7RU,UK.
Charles Benbrook4Benbrook Consulting Services,90063 Troy Road, Enterprise,OR 97828,USA.
Håvard Steinshamn5Food and Agriculture Division-Grassland and Forage,Norwegian Institute of Bioeconomy Research (NIBIO),Gunnars veg 6,N-6630 Tingvoll,Norway.
Joanna Gromadzka-Ostrowska6Department of Dietetics, Faculty of Human Nutrition and Consumer Sciences,Warsaw University of Life Sciences,Nowoursynowska 159c,Warsaw 02-776,Poland.
Ewa Rembiałkowska7Department of Functional and Organic Food and Commodities, Faculty of Human Nutrition and Consumer Sciences,Warsaw University of Life Sciences,Nowoursynowska 159c,Warsaw 02-776,Poland.
Krystyna Skwarło-Sońta8Department of Animal Physiology, Faculty of Biology,University of Warsaw,Miecznikowa 1,Warsaw 02-096,Poland.
Mick Eyre1Nafferton Ecological Farming Group (NEFG),School of Agriculture, Food and Rural Development,Newcastle University,Nafferton Farm,Stocksfield,Northumberland NE43 7XD,UK.
Giulio Cozzi9Department of Animal Medicine, Production and Health,University of Padua,Viale dell' Università 19,35020 Legnaro,Italy.
Mette Krogh Larsen10Department of Food Science-Food Chemistry & Technology,Aarhus University,Blichers Allé 20,Building F20/8845,8830 Tjele,Denmark.
Teresa Jordon1Nafferton Ecological Farming Group (NEFG),School of Agriculture, Food and Rural Development,Newcastle University,Nafferton Farm,Stocksfield,Northumberland NE43 7XD,UK.
Urs Niggli11Research Institute for Organic Agriculture (FiBL),Ackerstrasse 113,CH-5070 Frick,Switzerland.
Tomasz Sakowski12Institute of Genetics and Animal Breeding,Polish Academy of Science,Jastrzębiec, Postępu 36,Magdalenka 05-552,Poland.
Philip C Calder13Human Development and Health Academic Unit, Faculty of Medicine,University of Southampton,Southampton SO16 6YD,UK.ORCID http://orcid.org/0000-0002-6038-710X
Graham C Burdge13Human Development and Health Academic Unit, Faculty of Medicine,University of Southampton,Southampton SO16 6YD,UK.
Smaragda Sotiraki14National Agricultural Research Foundation (NAGREF),Veterinary Research Institute of Thessaloniki,Thermi 57001,Thessaloniki,Greece.
Alexandros Stefanakis14National Agricultural Research Foundation (NAGREF),Veterinary Research Institute of Thessaloniki,Thermi 57001,Thessaloniki,Greece.
Sokratis Stergiadis1Nafferton Ecological Farming Group (NEFG),School of Agriculture, Food and Rural Development,Newcastle University,Nafferton Farm,Stocksfield,Northumberland NE43 7XD,UK.ORCID http://orcid.org/0000-0002-7293-182X
Halil Yolcu1Nafferton Ecological Farming Group (NEFG),School of Agriculture, Food and Rural Development,Newcastle University,Nafferton Farm,Stocksfield,Northumberland NE43 7XD,UK.
Eleni Chatzidimitriou1Nafferton Ecological Farming Group (NEFG),School of Agriculture, Food and Rural Development,Newcastle University,Nafferton Farm,Stocksfield,Northumberland NE43 7XD,UK.
Gillian Butler1Nafferton Ecological Farming Group (NEFG),School of Agriculture, Food and Rural Development,Newcastle University,Nafferton Farm,Stocksfield,Northumberland NE43 7XD,UK.
Gavin Stewart1Nafferton Ecological Farming Group (NEFG),School of Agriculture, Food and Rural Development,Newcastle University,Nafferton Farm,Stocksfield,Northumberland NE43 7XD,UK.
Carlo Leifert1Nafferton Ecological Farming Group (NEFG),School of Agriculture, Food and Rural Development,Newcastle University,Nafferton Farm,Stocksfield,Northumberland NE43 7XD,UK.
Farm Africa · GBWarsaw University of Life Sciences · PLNational Agricultural Research Foundation · GRNewcastle University · GBUniversity of Southampton · GBAarhus University · DKEnterprise Community Partners · USForschungsinstitut für Biologischen Landbau · CHGümüşhane University · TRNorwegian Institute of Bioeconomy Research · NOPolish Academy of Sciences · PLUniversity of Padua · ITUniversity of Warsaw · PL

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Demand for organic milk is partially driven by consumer perceptions that it is more nutritious. However, there is still considerable uncertainty over whether the use of organic production standards affects milk quality. Here we report results of meta-analyses based on 170 published studies comparing the nutrient content of organic and conventional bovine milk. There were no significant differences in total SFA and MUFA concentrations between organic and conventional milk. However, concentrations of total PUFA and n-3 PUFA were significantly higher in organic milk, by an estimated 7 (95 % CI -1, 15) % and 56 (95 % CI 38, 74) %, respectively. Concentrations of α-linolenic acid (ALA), very long-chain n-3 fatty acids (EPA+DPA+DHA) and conjugated linoleic acid were also significantly higher in organic milk, by an 69 (95 % CI 53, 84) %, 57 (95 % CI 27, 87) % and 41 (95 % CI 14, 68) %, respectively. As there were no significant differences in total n-6 PUFA and linoleic acid (LA) concentrations, the n-6:n-3 and LA:ALA ratios were lower in organic milk, by an estimated 71 (95 % CI -122, -20) % and 93 (95 % CI -116, -70) %. It is concluded that organic bovine milk has a more desirable fatty acid composition than conventional milk. Meta-analyses also showed that organic milk has significantly higher α-tocopherol and Fe, but lower I and Se concentrations. Redundancy analysis of data from a large cross-European milk quality survey indicates that the higher grazing/conserved forage intakes in organic systems were the main reason for milk composition differences.

Indexed as

alpha-TocopherolAnimalsCattleDairyingDietary Fats, UnsaturatedEvidence-Based PracticeFatty Acids, Omega-3Food, OrganicHumansIodineIron, DietaryLinoleic Acids, ConjugatedLivestockMilkNutritive ValueSeleniumalpha-TocopherolDietary Fats, UnsaturatedFatty Acids, Omega-3IodineIron, DietaryLinoleic Acids, ConjugatedSeleniumAA arachidonic acidALA α-linolenic acidAntioxidantsBS basket studiesCLA conjugated linoleic acidConjugated linoleic acidDairy productsEFSA European Food Safety AuthorityEX controlled experimentsFA fatty acidLA linoleic acidMilkMPD mean percentage differencen-3 PUFAOrganic productsRDA redundancy analysisSMD standardised mean differenceUM unweighted meta-analysisVA vaccenic acidVitaminsVLC very long chainWM weighted meta-analysis

Identifiers

PMID26878105
PMCPMC4838834
OpenAlexW2284292744

What OpenQuestion holds

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LicenceCC BY
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Registered trials

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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.