Mixed
Whole grain intake is not significantly associated with cancer mortality, and substituting whole grains for refined grains or red meat does not significantly reduce cancer mortality.
Do not rely on whole grains alone to prevent cancer. While they are excellent for heart health and overall longevity, this study found no significant link to reduced cancer mortality. Maintain a balanced diet with various vegetables and fruits for cancer prevention, while using whole grains for cardiovascular benefits.
higher whole grain intake was associated with lower total and CVD mortality but not cancer mortality... whereas the same intake level was nonsignificantly associated with lower cancer mortality (HR, 0.98; 95% CI, 0.94-1.02).
Why this rating
Large cohort studies with long follow-up, but observational nature prevents causal claims regarding cancer specifically.
Source
Association Between Dietary Whole Grain Intake and Risk of Mortality
Hongyu Wu et al. · JAMA Internal Medicine · 2015
DOI 10.1001/jamainternmed.2014.6283
Related findings · Mixed
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This is one finding among thousands. Every one is graded and traced to its source, so you can see what the evidence actually supports. Browse the research →