Nutrition Facts with Dr. Greger

Treating Early- and Late-Stage Prostate Cancer

Nov 13, 2025
Explore how plant-based diets may impact prostate cancer risk and outcomes. Discover studies linking higher plant intake to lower PSA levels and cancer severity. Learn about a randomized trial showing lifestyle changes can slow progression and enhance survival after diagnosis. Hear about remarkable case reports where strict diets reversed bone metastases. Delve into potential mechanisms, including how certain dietary fats may promote cancer growth. Uncover the benefits of diet in delaying standard treatments and empowering patients.
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INSIGHT

Plant-Based Diet Lowers Prostate Risk

  • Higher consumption of a healthy plant-based diet was linked to much lower odds of elevated PSA and prostate cancer outcomes.
  • Harvard cohorts showed nearly half the risk of prostate cancer and death under age 65 with healthier plant-based patterns.
ANECDOTE

Rapid Tumor Marker Drop Case

  • A 73-year-old man placed on a plant-based diet had tumor markers drop about 75% within 10 days.
  • Case reports like this suggest potential but cannot prove causation without trials.
ADVICE

Adopt A Whole-Program Lifestyle

  • Join a comprehensive plant-based lifestyle program including diet, walking, and stress reduction to slow early-stage prostate cancer.
  • Such programs reduced cancer cell growth in blood assays and lowered progression to surgery over two years.
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