Olive Oil and Improved Blood Lipid Profile

Research synthesisLow evidenceMixed effect size3 studies · 1 beneficial · 2 neutral · 0 harmful

Across 3 studies, 2 reported neutral effects with small effect sizes and 1 reported beneficial moderate-sized effects on lipid profiles. No statistically significant findings were observed. The evidence is mixed and preliminary, with no consistent doses or forms reported.

Caveats: Evidence base is small (only 3 studies) — conclusions should be considered preliminary. Additionally, none of the included studies reported statistically significant findings, suggesting that any observed effects may be small or inconsistent. Study durations and doses were not consistently reported.

Generated Jul 15, 2026

3 of 3 papers

Effect of the Mediterranean diet supplemented with olive oil versus the Mediterranean diet supplemented with mixed nuts on blood pressure and serum lipid indexes among adults: a systematic review and meta-analysis of randomized controlled trials.
- 2025-11
- Meta-Analysis
- Nutrition, metabolism, and cardiovascular diseases : NMCD 35(11)
- - Behnaz Pourrajab
  - Artemiss Mirdar Harijani
  - Parastoo Asghari
  - Farzad Shidfar
- PubMed: 40651889
- DOI: 10.1016/j.numecd.2025.104166
7 Insights on
- Improved Blood Lipid Profile
- High evidence
The findings indicated that the MED diet supplemented with olive oil has no significant effect on lipid indices
Effect
Neutral
Effect size
Small
Significant
No
Dietary supplementations to mitigate the cardiopulmonary effects of air pollution toxicity: A systematic review of clinical trials.
- 2024-06-13
- Systematic Review
- PloS one 19(6)
- - Mehran Ilaghi
  - Fatemeh Kafi
  - Mohadeseh Shafiei
  - Moein Zangiabadian
  - Mohammad Javad Nasiri
- PubMed: 38870164
- DOI: 10.1371/journal.pone.0304402
11 Insights on
- Improved Blood Lipid Profile
- High evidence
showed conflicting results for cardiovascular outcomes
Effect
Neutral
Effect size
Small
Significant
No
Bioactive Phenolic Compounds in Extra Virgin Olive Oil: Implications for Cardiovascular Health.
- 2026-02
- Review
- Food science & nutrition 14(2)
- - Cristina Vázquez-Jiménez
  - Mª Dolores Rodríguez-Pérez
  - Laura Ortega-Hombrados
  - Ana María Sánchez-Tévar
  - José Pedro de la Cruz-Cortés
  - José A Gonzalez-Correa
- PubMed: 41695108
- DOI: 10.1002/fsn3.71441
4 Insights on
- Improved Blood Lipid Profile
- Low evidence
generally report improvements in blood pressure, vascular function, lipid profiles, and inflammatory markers
Effect
Beneficial
Effect size
Moderate

Olive Oil and Improved Blood Lipid Profile

Effect of the Mediterranean diet supplemented with olive oil versus the Mediterranean diet supplemented with mixed nuts on blood pressure and serum lipid indexes among adults: a systematic review and meta-analysis of randomized controlled trials.

Dietary supplementations to mitigate the cardiopulmonary effects of air pollution toxicity: A systematic review of clinical trials.

Bioactive Phenolic Compounds in Extra Virgin Olive Oil: Implications for Cardiovascular Health.