Myth-buster
A meta-analysis found that olive oil was tied to slightly higher systolic blood pressure than mixed nuts — a statistically significant difference (p<0.001) — while other heart risk markers showed no advantage for either option.
This challenges the blanket assumption that olive oil is always the superior choice for heart health, but the finding is preliminary and based on a single meta-analysis where the olive oil group didn't actually worsen blood pressure on its own — it just didn't lower it as much as the mixed-nut group did.
Researchers compared two versions of the Mediterranean diet — one with extra olive oil, one with extra mixed nuts — and found that the nut version led to a slightly greater drop in systolic blood pressure (the top number). Olive oil's effect on blood pressure was still neutral, not harmful, and neither diet clearly improved cholesterol, triglycerides, or other lipid measures in this analysis.
Where this fits in the evidence
This is among the first studies we've indexed on Olive Oil for Increased Systolic Blood Pressure — treat it as an early signal until more research accumulates.
The study
- Meta-Analysis
- 2025-11
- Nutrition, metabolism, and cardiovascular diseases : NMCD
This is a plain-language summary of a research finding, not medical advice. Pillser surfaces research signals to help you decide what's worth investigating — always consult a qualified professional before changing what you take.