A new review published in European Urology sheds fresh light on how what men eat could shape their odds of developing or surviving prostate cancer. The international team of researchers analyzed results from 49 cohort studies and 14 randomized controlled trials to assess how dietary patterns, rather than individual nutrients, relate to prostate cancer risk, progression, and mortality. Their main conclusion: diets rich in plant-based foods, Mediterranean-style meals, and those with low inflammatory potential repeatedly predicted better outcomes for men.

The scientists found that men following diets high in vegetables, fruits, whole grains, healthy proteins, and “good” fats, while limiting processed or sugary foods and red meat, had lower risks of aggressive prostate cancer and cancer-related death. After a prostate cancer diagnosis, eating this way also appeared to slow the disease’s progression. By contrast, men whose eating habits resembled Western dietary patterns, heavy on processed meats, refined grains, and added sugars, faced higher odds of aggressive disease and death from prostate cancer.

Notably, the evidence for diet’s role in slowing progression and reducing cancer-specific mortality after diagnosis was even stronger than its role in preventing prostate cancer outright, though there were positive signals for both. The review also analyzed trials involving various diet interventions, including fiber-rich, soy-supplemented, fish oil-enhanced, plant-based, vegan, and low-carbohydrate plans. While some showed promising effects on prostate-specific antigen (PSA) or tumor markers, the results were inconsistent, partly due to short follow-up times and low adherence.

Curiously, the Mediterranean diet has shown little consistent evidence for preventing prostate cancer onset, but it is associated with reducing disease progression and improving survival after diagnosis. This suggests the diet’s benefits may lie in slowing cancer advancement rather than initial prevention.

The authors urge more long-term, standardized studies and call for “integrated strategies” to help men sustain healthy eating habits amid real-world barriers like cost and convenience. Less than 2% of American men eat what public health guidelines define as an ideal diet, highlighting the challenge ahead. For men at risk, the message is strong: what’s on the plate could matter as much for the prostate as for overall well-being.

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