Questions about dairy and cancer are common. Let’s explore how dairy products—like milk, cheese, yogurt, etc.—might impact cancer risk and survivorship.

The link between dairy and cancer risk varies depending on the type of cancer. 

• Positive Findings: Research suggests dairy may lower the risk of colorectal cancer. 

• Potential Concerns: Some studies indicate dairy could increase the risk of prostate cancer. 

This doesn’t mean people with colorectal cancer should eat more dairy or that those with prostate cancer should avoid it entirely. It highlights the need for more research and the importance of looking at broader trends rather than isolated studies.

We don’t yet have definitive answers about how dairy affects every type of cancer. For example, while colorectal and prostate cancers show differing trends, these findings still need further investigation. 

To stay informed, consider resources like the Continuous Update Project (CUP) by the American Institute for Cancer Research (AICR). This global effort reviews the latest research on cancer and lifestyle factors, updating recommendations as evidence evolves.

For most cancers, total dairy intake—including yogurt, cheese, and skim/low-fat milk—doesn’t appear to impact survival. 

• Prostate Cancer Exception: Some evidence suggests that consuming more than 400 grams of dairy daily might worsen outcomes for prostate cancer, particularly with full-fat products like whole milk. However, this isn’t consistent across all types of prostate cancer and requires further study. 

• General Guidance: Current evidence doesn’t support avoiding dairy for cancer prevention or prognosis in most cases. 

• Prostate Cancer: If you’re at risk for or have prostate cancer, discuss your dairy intake with your care team. Full-fat dairy consumed frequently seems to carry the greatest risk. 

If you avoid dairy for personal reasons, there are plenty of alternatives: 

• Plant-Based Options: Choose unsweetened soy or almond milk for a calcium-rich substitute. Opt for calcium-fortified versions to ensure adequate nutrient intake.

At this time, there’s no strong evidence to suggest most people need to eliminate dairy for cancer prevention or survivorship. For specific concerns, especially prostate cancer, consult your care team for personalized recommendations. 

If you have more questions, your Iris Care Team is here to help.