Only 20% of U.S. men in a new survey said they knew that research has linked dairy consumption to a higher risk of prostate cancer, according to the Physicians Committee for Responsible Medicine, a nonprofit that promotes plant-based diets.
The survey, conducted by Morning Consult for the group, included 1,102 U.S. men and was released during Prostate Cancer Awareness Month, as summarized by ScienceDaily. After being told about the link, 66% said they would be likely to avoid dairy, and 76% supported requiring warning labels on dairy products.
The findings touch a common household decision. Milk, cheese, and yogurt are everyday foods for many families, and the survey measured awareness and attitudes, not whether dairy causes cancer. The science behind the link is weaker and more mixed than the survey framing suggests.
A Survey Measuring Awareness, Not Risk
The survey also found that only 20% of men had received information from a health care professional about nutrition and prostate cancer risk. That gap in doctor-patient conversations may be the most practical takeaway.
"Physicians and other healthcare professionals need more education on the dangers of dairy products and the benefits of a plant-based diet for prostate cancer," said Noah Praamsma, a registered dietitian and nutrition education coordinator with the Physicians Committee.
Readers should weigh the source and its mission. The Physicians Committee advocates plant-based eating, sponsored the survey, and issued the release, and its framing about the "dangers" of dairy reflects that position. The survey's sampling details and margin of error were not included in the summary MedicalDaily reviewed. Question wording can also shape answers, which is why full questionnaires matter when judging results.
The group points to studies associating higher dairy intake with prostate cancer, including a meta-analysis of 32 studies and a study of 3,612 men in which those with the highest low-fat dairy intake were more than twice as likely to develop the disease as those with the lowest intake. It also cites research linking plant-based diets with a lower risk of prostate cancer and of its progression and recurrence.
Weighing the Dairy Research
Most of this evidence comes from observational studies, which can find associations but cannot prove cause and effect. People who eat more dairy may differ in other ways, including overall diet, weight, and how often they are screened, which can affect results.
Independent reviews rate the evidence cautiously. A calcium scoping review for the Nordic Nutrition Recommendations found only "limited-suggestive evidence" that dairy products and high-calcium diets increase prostate cancer risk. The same review found strong evidence that high dairy consumption protects against colorectal cancer, in line with conclusions from the World Cancer Research Fund.
That means cutting dairy entirely is not a simple, risk-free trade, especially for people who rely on it for calcium. Findings also vary by type of dairy, such as low-fat versus whole milk, which makes the overall picture harder to interpret.
MedicalDaily Evidence Check: The new report is a survey of 1,102 men sponsored by an advocacy group. It measured awareness and attitudes. The underlying dairy research is largely observational, has been rated as limited-suggestive for prostate cancer, and does not prove that dairy causes the disease. Major U.S. screening guidance has not changed because of it.
Prostate cancer remains a major concern. The American Cancer Society estimates 333,830 new cases and 36,320 deaths in the U.S. in 2026. Other than skin cancer, it is the most common cancer in American men, and it is the second-leading cause of cancer death among them, behind lung cancer.
Practical Steps for Men and Families
Men at higher risk include older men, Black men, and men with a close relative, such as a father or brother, who had prostate cancer. Those groups should talk with a clinician about when to consider screening.
Screening decisions are individual. The American Cancer Society's prostate cancer early detection recommendations encourage men to make an informed decision with a clinician about testing, starting the conversation at age 50 for men at average risk and earlier for men at higher risk. The PSA blood test is the main screening tool, sometimes along with a digital rectal exam.
For many men, the most useful step is a conversation. Only one in five men in the survey said a health care professional had discussed nutrition and prostate cancer with them, so men can raise the topic at their next checkup, along with family history and screening timing. Men already diagnosed should talk with their oncology team before changing their diet.
On diet, a pattern rich in vegetables, fruits, whole grains, and beans is widely recommended for overall health. Men who want to cut back on dairy can ask a clinician or registered dietitian how to get enough calcium and vitamin D from other sources. Anyone with bone loss or on specific medications should not make major diet changes without guidance.
See a clinician for urinary changes such as frequent or painful urination or a weak stream, blood in the urine or semen, or new bone pain. Early prostate cancer often causes no symptoms, so screening conversations matter even without warning signs.
Costs vary. PSA testing is often covered by insurance for eligible men, and community health centers may offer lower-cost visits.
The Physicians Committee is using the survey to push for more nutrition education and warning labels. MedicalDaily will report any new peer-reviewed research that clarifies the dairy question.
Key Questions Answered
What did the survey find? Only 20% of 1,102 men knew research has linked dairy to prostate cancer risk, and only 20% had received information from a health care professional about nutrition and prostate cancer.
Who conducted the survey? Morning Consult conducted it for the Physicians Committee for Responsible Medicine, a nonprofit that promotes plant-based diets.
Does dairy cause prostate cancer? That has not been proven. The evidence is mainly observational and has been rated as limited-suggestive.
Does dairy have health benefits? A Nordic nutrition review found strong evidence that high dairy consumption protects against colorectal cancer, and dairy is a major source of calcium.
Should men stop eating dairy? Talk with a clinician or dietitian before making major diet changes, especially if you have bone health concerns.
Who is at higher risk for prostate cancer? Older men, Black men, and men with a close family history of the disease.
When should men consider screening? Discuss PSA testing with a clinician, starting at 50 for average-risk men and earlier for those at higher risk.
