Also known as: walnut
Latest evidence update: 2026-03-17
Strongest in Sample size (95). Held back by Recency (54).
Solid mix of RCTs with some methodological gaps.
Good cross-study replication, some imprecision.
Tens of thousands of participants pooled across studies.
Studies agree on direction of effect.
Evidence base skews older; field may have moved on.
No quantified outcomes yet. Once we have studies with measurable endpoints, you will see per-outcome magnitude here.
Areas where research points to a consistent direction of effect. The strength of evidence is graded; the size of the effect is not quantified.
Compound-by-compound profile of what's in this food and the evidence behind each.
30g
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Higher intake of linoleic acid (LA) is associated with a lower risk of hip fractures, with the protective effect observed at intakes of 9-16 g per day.
Walnut consumption significantly increased catalase (CAT) activity, a key antioxidant enzyme.
Walnut supplementation significantly decreased Apolipoprotein B levels.
Walnut supplementation did not affect systolic blood pressure.
Walnut supplementation did not affect diastolic blood pressure.