Also known as: Mediterranean diet, MedDiet, Mediterranean-style
Latest evidence update: 2026-04-24
Strongest in Sample size (95). Held back by Study quality (74).
Solid mix of RCTs with some methodological gaps.
Confirmed across many independent studies with significant findings.
Tens of thousands of participants pooled across studies.
Studies agree on direction of effect.
Most studies are recent (last 2-3 years).
Effect-size tagged on 369 of 429 claims for this pattern. Our research updates daily; remaining claims are pending re-processing.
Areas where research points to a consistent direction of effect. The strength of evidence is graded; the size of the effect is not quantified.
Vegetable-forward diet emphasizing olive oil, fish, legumes, whole grains, nuts, and moderate wine. One of the most-studied dietary patterns for cardiovascular and mortality outcomes (PREDIMED, Lyon Heart).
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Mediterranean diet intervention showed no clear evidence of effectiveness for fatigue in rheumatoid arthritis, with insufficient evidence for meta-analysis.
Mediterranean diet adherence is associated with decreased dementia risk.
Mediterranean diet adherence is associated with an 18% reduction in risk of cognitive impairment compared to low adherence.
Adherence to the Mediterranean diet is associated with a significant reduction in stroke risk, with a pooled hazard ratio of 0.88.
Mediterranean diet intervention reported a significant effect on glycemic control in patients with type 2 diabetes.