Longevity & Aging · Diets · Metabolic & Cardiometabolic
Does a Mediterranean diet lower heart attack and stroke risk?
The claim, precisely: Mediterranean diet decreases cardiovascular disease
Yes — among the strongest diet evidence, mostly from fewer strokes.
Evidence ladder
How far up the ladder this claim has climbed. A high consensus on a low rung means "consistent so far," not "proven in people."
Top evidence so far: All trials, pooled (Meta-analysis)
How the studies fall
What the evidence shows
The Mediterranean diet (+olive oil/+nuts) reduced major cardiovascular events ~30% in high-risk adults - the strongest CAUSAL longevity-diet evidence, but a flawed pillar: the original trial was retracted for a randomization breach and republished (effect survived), industry-funded, benefit driven mainly by stroke.
The evidence (6)
| Source | Grade | Stance | Quality | Finding |
|---|---|---|---|---|
| Karam 2023 · BMJ | meta-analysis | supports | high | [FT-verified] FT BMJ network-MA all-cause mortality OR0.72 (0.56-0.92) MODERATE GRADE |
| Sebastian 2024 · Curr Probl Cardiol | meta-analysis | supports | moderate | MA of RCTs (PREDIMED, CORDIOPREV, Lyon): MedDiet reduces cardiovascular events vs control |
| Estruch R, et al. (PREDIMED, republished) 2018 · N Engl J Med | RCT | supports | high | PROVENANCE FLAG: 2013 PREDIMED retracted for randomization errors, republished 2018 corrected; effect persisted |
| Doundoulakis 2024 · Nutr Rev | meta-analysis | supports | moderate | Network MA of dietary RCTs with hard CV outcomes: MedDiet among most effective for reducing CV events |
| Ungvari 2025 2025 · GeroScience | observational | supports | moderate | [FT-verified] GeroScience MA 30 studies vs stroke; pooled HR favorable |
| Estruch R, et al. (PREDIMED, republished) 2018 · N Engl J Med | RCT | supports | moderate | PREDIMED RCT n=7447 (republished): MI/stroke/CV-death HR ~0.69-0.72 vs control |
Educational only, not medical advice. Grades and scores reflect published evidence weighted by study design and quality; see the methodology.