Longitudinal observational cohort study of association of plant-based diets and disease progression in men with prostate cancer

Plant-based diets are associated with primary prevention of fatal prostate cancer, but less is known about the association of postdiagnostic plant-based diet patterns and risk of disease progression in men with prostate cancer. A longitudinal observational cohort study of 2062 men diagnosed with nonmetastatic prostate cancer found that patients with the highest intake of plant foods in the overall plant-based diet index had lower risk of prostate cancer progression compared with those with the lowest intake (highest versus lowest quintile HR 0.53; p for trend = 0.003). The authors conclude that consuming a primarily plant-based diet may be associated with better prostate cancer-specific health outcomes among men with prostate cancer.