High Dietary Fiber Intake Reduces the Risk of Prostate Cancer

High dietary fiber reduces the risk of prostate cancer by increasing levels of sex hormone-binding globulin and improving blood sugar regulation— according to a study from the National Cancer Center in Tokyo, Japan. The incidence of prostate cancer has been increasing in Japan. Fiber intake is relatively low in that country, but difference in fiber intake was an important predictor of the disease. Higher total fiber and insoluble fiber intake decrease the risk of advanced prostate cancer. The results of this study might not apply to other countries, because the major sources of fiber in the Japanese diet include soy foods, rice and shiitake mushrooms. (American Journal of Clinical Nutrition, 101:118-125, 2015)

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