Evidence map›Paper›PMID 31415611›Full record

SynthesisPloS one2019

Effects of palm oil consumption on biomarkers of glucose metabolism: A systematic review.

Siti Hafizah Zulkiply, Vimala Balasubramaniam, Nur Ain Abu Bakar, Aswir Abd Rashed, Sophia Rasheeqa Ismail

Open access · goldAbstract readSystematic Review
In one paragraph

Synthesis in PloS one, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers.

0numbers the graph read from it
0cells of the map it votes in
5citing papers in PubMed
1.0field-weighted citation impact, top 26% 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

5 citing papers in PubMed, 20 citations in OpenAlex.

  1. Article
  2. Toxicity of Oils Extracted From the Arils ofBiochemistry research international · 2024
    Article
  3. Article
  4. Linoleic acid and the regulation of glucose homeostasis: A review of the evidence.Prostaglandins, leukotrienes, and essential fatty acids · 2021
    Review
  5. Review
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

5 authors at 1 institution in 1 country.

Siti Hafizah ZulkiplyCardiovascular, Diabetes and Nutrition Centre, Institute for Medical Research, Ministry of Health Malaysia, Selangor, Malaysia.ORCID 0000-0003-0859-5080
Vimala BalasubramaniamCardiovascular, Diabetes and Nutrition Centre, Institute for Medical Research, Ministry of Health Malaysia, Selangor, Malaysia.
Nur Ain Abu BakarCardiovascular, Diabetes and Nutrition Centre, Institute for Medical Research, Ministry of Health Malaysia, Selangor, Malaysia.
Aswir Abd RashedCardiovascular, Diabetes and Nutrition Centre, Institute for Medical Research, Ministry of Health Malaysia, Selangor, Malaysia.
Sophia Rasheeqa IsmailCardiovascular, Diabetes and Nutrition Centre, Institute for Medical Research, Ministry of Health Malaysia, Selangor, Malaysia.
Ministry of Health · MY

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

introductionVegetable oil is an important source of fatty acids, and as palm oil being the highest consumed vegetable oil in many countries, its high saturated fatty acid content has led many concerns on cardiometabolic health. Dietary fatty acids has also been linked to affect glucose metabolism and insulin sensitivity. This systematic review is aimed at critically evaluating the available evidence on the association of palm oil with the biomarkers of glucose metabolism as compared to other vegetable oils.

methodsWe systemically searched PubMed, CENTRAL and Scopus up to June 2018. We searched for published interventional studies on biomarkers of glucose metabolism (defined as fasting glucose, fasting insulin, HOMA, 2-hour post prandial glucose and HbA1C) that compared palm oil- or palm olein-rich diets with other edible vegetable oils (such as olive oil, canola oil and soybean oil). Two reviewers independently extracted data and assessed study risks of bias. Mean differences of outcomes were pooled for the meta-analysis.

resultsWe identified 1921 potentially eligible articles with only eight included studies. Seven randomised cross-over trials and one parallel trial were included. Study population were among young to middle-aged, healthy, non-diabetic, and normal weight participants. Intervention duration ranged from three to seven weeks, and fat substitution ranged from 15% to 20% energy. There were insignificant differences in fasting glucose when compared to partially hydrogenated soybean oil [-0.15mmol/L (-0.46,0.16) P = 0.33, I2 = 48%], soybean oil [0.05mmol/L (-0.09,0.18) P = 0.49, I2 = 0%] and olive oil [0.04mmol/L (-0.09,0.17) P = 0.76, I2 = 0%]. Insignificant effects were also seen on fasting insulin when compared to partially hydrogenated soybean oil [1.72pmol/L (-11.39,14.84) P = 0.80, I2 = 12%] and olive oil diet [-0.14pmol/L (-4.87,4.59) P = 0.95, I2 = 0%].

conclusionCurrent evidence on the effects of palm oil consumption on biomarkers of glucose metabolism is poor and limited to only healthy participants. We conclude that little or no additional benefit will be obtained by replacing palm oil with other oils rich in mono or polyunsaturated fatty acids for changes in glucose metabolism.

Indexed as

Dietary FatsPalm OilBlood GlucoseCarbohydrate MetabolismHumansInsulinInsulin ResistanceBlood GlucoseDietary FatsInsulinPalm Oil

Identifiers

PMID31415611
PMCPMC6695104
OpenAlexW2967108662

What OpenQuestion 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 OpenQuestion graph.