Extra Virgin Olive Oil Improves HDL Lipid Fraction but Not HDL-Mediated Cholesterol Efflux Capacity: A Double-Blind, Randomised, Controlled, Cross-over Study (OLIVAUS)
Open accessAbstract
Abstract Olive oil (OO) polyphenols have been shown to improve HDL anti-atherogenic function, thus demonstrating beneficial effects against cardiovascular risk factors. The aim of the present study was to investigate the effect of extra virgin high polyphenol olive oil (HPOO) v . low polyphenol olive oil (LPOO) on the capacity of HDL to promote cholesterol efflux in healthy adults. In a double-blind, randomised cross-over trial, fifty participants (aged 38·5 ( sd 13·9) years, 66 % females) were supplemented with a daily dose (60 ml) of HPOO (320 mg/kg polyphenols) or LPOO (86 mg/kg polyphenols) for 3 weeks. Following a 2-week washout period, participants crossed over to the alternate treatment. Serum HDL-cholesterol efflux capacity, circulating lipids (i.e. total cholesterol, TAG, HDL, LDL) and anthropometrics were measured at baseline and follow-up. No significant between-group differences were observed. Furthermore, no significant changes in HDL-cholesterol efflux were found within either the LPOO and HPOO treatment arms; mean changes were 0·54 % (95 % CI (0·29, 1·37)) and 0·10 % (95 % CI (0·74, 0·94)), respectively. Serum HDL increased significantly after LPOO and HPOO intake by 0·13 mmol/l (95 % CI (0·04, 0·22)) and 0·10 mmol/l (95 % CI (0·02, 0·19)), respectively. A small but significant increase in LDL of 0·14 mmol/l (95 % CI (0·001, 0·28)) was observed following the HPOO intervention. Our results suggest that additional research is warranted to further understand the effect of OO with different phenolic content on mechanisms of cholesterol efflux via different pathways in multi-ethnic populations with diverse diets.
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Only 4 of the 10 selected studies performed the dietary intervention in a double-blind way.
“Only 4 of the 10 selected studies performed the dietary intervention in a double-blind way [31,33,35,40].”
Ten RCTs met the inclusion criteria and were included in the meta-analysis.
“After reviewing the full text of the remaining records, only 10 met the inclusion criteria and were included in the meta-analysis [31,32,33,34,35,36,37,38,39,40].”
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- Authors
- Sarapis, K., George, E. S., Marx, W., Mayr, H. L., Willcox, J., Powell, K. L., Folasire, O. S., Lohning, A. E., Prendergast, L. A., Itsiopoulos, C., Thomas, C. J., & Moschonis, G.
- Affiliations
- La Trobe University (AU)
- Deakin University (AU)
- Bond University (AU)
- The University of Melbourne (AU)
- Corresponding author
- Sarapis, Katerina
- ORCID
- Venue
- British Journal Of Nutrition
- Publisher
- Cambridge University Press (CUP)
- Published
- 2022-11-15
- Volume
- 130
- Issue
- 4
- Pages
- 641-650
- ISSN
- 0007-1145 (ISSN-L)
- 1475-2662
- PMC
- PMC10357319
- OpenAlex
- W4309095742
- Cited by
- 20
- References
- 42
- Citations by year
- 2026: 5 · 2025: 6 · 2024: 5 · 2023: 4
- FWCI
- 1.43
- Type
- journal article
- Language
- en
- Open access
- hybrid
- doi.org
- Locations
- British Journal Of Nutrition (publishedVersion, cc-by)
- PubMed Central (publishedVersion, cc-by)
- Bond University Research Portal (Bond University) (publishedVersion, cc-by-nc-nd)
- PubMed (publishedVersion)
- Figshare (submittedVersion)
- Figshare (submittedVersion, cc-by)
- La Trobe University (cc-by)
- Funders
- Australian Government
- University of Cambridge
- La Trobe University
- Topics
- Physical Sciences › Chemistry › Organic Chemistry › Edible Oils Quality and Analysis
- Health Sciences › Medicine › Surgery › Cholesterol and Lipid Metabolism
- Health Sciences › Nursing › Nutrition and Dietetics › Fatty Acid Research and Health
- Keywords
- extra virgin olive oil, olive oil polyphenols, HDL cholesterol, cholesterol efflux capacity, dietary supplementation, serum lipids, LDL cholesterol, cardiovascular risk
- MeSH terms
- Olive Oil, Adult, Female, Humans, Cholesterol, HDL, Male, Phenols, Cross-Over Studies, Polyphenols
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