Research suggests that walnut consumption may be associated with reduced cancer risk, with a 2023 narrative review finding that higher nut intake was linked to meaningfully lower risks of colon, lung, and pancreatic cancers, roughly a 21% lower rate of cancer mortality, and early evidence of improved survival in patients with colorectal, breast, and prostate cancer. A 2014 review also highlighted two studies specifically on walnuts, finding that their consumption was associated with reduced cancer growth and development, potentially through suppression of inflammatory pathways. However, most of the supporting evidence comes from observational cohort studies and reviews rather than randomized controlled trials, meaning that confounding factors — such as overall diet quality and lifestyle habits — cannot be fully ruled out as explanations for the observed associations. The broader body of literature in this collection addresses general dietary patterns like Mediterranean and plant-based diets, physical activity, and other lifestyle factors in relation to cancer and chronic disease, but does not isolate walnuts specifically, so conclusions about walnuts as an independent factor should be interpreted with appropriate caution.
Citations from PubMed and preprint sources. Match score (0-100) reflects automated search ranking, not clinical appraisal.
| Title | Type | Year | Direction | Match |
|---|---|---|---|---|
| Healthy lifestyle and life expectancy free of cancer, cardiovascular disease,... | Other | 2020 | Neutral | 72 |
| Portfolio Diet Score and Risk of Cardiovascular Disease: Findings From 3 Pros... | Other | 2023 | Neutral | 67 |
| Fruit and Vegetable Intake and Mortality: Results From 2 Prospective Cohort S... | Meta-analysis | 2021 | Neutral | 62 |
| Intake of whole grain foods and risk of type 2 diabetes: results from three p... | Other | 2020 | Neutral | 57 |
| Quality of Life in Women Diagnosed with Breast Cancer after a 12-Month Treatm... | RCT | 2020 | Neutral | 52 |
| Association of glycaemic index and glycaemic load with type 2 diabetes, cardi... | Meta-analysis | 2024 | Neutral | 47 |
| Dried Fruits, Nuts, and Cancer Risk and Survival: A Review of the Evidence an... | Review | 2023 | Supports | 42 |
| Diet components can suppress inflammation and reduce cancer risk. | Review | 2014 | Supports | 37 |
| The Portfolio Diet and Incident Type 2 Diabetes: Findings From the Women's He... | Other | 2023 | Neutral | 32 |
| Mechanisms of weight loss-induced remission in people with prediabetes: a pos... | RCT | 2023 | Neutral | 27 |
| Recreational physical activity and risk of triple negative breast cancer in t... | Other | 2016 | Neutral | 22 |
| Lifetime physical activity and risk of endometrial cancer. | RCT | 2010 | Neutral | 17 |