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Is Milk the Secret Weapon Against Colon Cancer?

Dairy often gets a bad rap.

From trendy plant-based milk alternatives to anti-dairy diets, it seems like milk has become public enemy number one in the nutrition world.

But what if science told a different story?

Here at e-Alert, we believe in digging deeper. And now, a groundbreaking study reveals something dairy critics won’t tell you: milk, in moderation, could help prevent colon cancer.

A study out of Oxford University tracked the diets and health outcomes of over half a million women for more than 16 years. Among the findings:

  • Calcium-rich foods, including dairy products, are linked to a 17% lower risk of colorectal cancer with every additional 300 milligrams of calcium consumed daily.
  • Dairy milk showed particularly strong protective effects, with a 14% lower cancer risk for each additional glass consumed.
  • Yogurt also played a role, providing similar benefits due to its calcium, riboflavin, and magnesium content.

This research offers compelling evidence that moderate dairy consumption could be a simple, effective step toward cancer prevention.

Scientists believe that calcium, the primary mineral in milk, protects against colorectal cancer through several mechanisms:

  • Binding Harmful Substances: Calcium can latch onto carcinogens in the digestive system, reducing their potential to cause harm.
  • Healthy Cell Growth: Calcium promotes the development of normal cells in the colon lining.
  • Lower Inflammation: Dairy’s calcium content has anti-inflammatory properties, which may help reduce cancer risk.

These findings were further validated by analyzing genetic variations in participants’ ability to digest dairy. Those genetically predisposed to tolerate dairy had even lower cancer rates, reinforcing the connection.

If you’ve been avoiding dairy due to diet trends or fear of calories, this study might have you rethinking your choices.

For most seniors, moderate dairy consumption offers a host of benefits:

  • Bone Health: Calcium supports bone density, helping to prevent fractures.
  • Nutrient Powerhouse: Beyond calcium, milk contains magnesium, phosphorus, and potassium—nutrients essential for overall health.
  • Easy to Digest Options: If lactose intolerance is a concern, consider lactose-free milk or fortified plant-based alternatives with added calcium.

No single food will eliminate cancer risk, but this research reminds us that a balanced diet is your best defense. Pairing calcium-rich foods with other healthy habits, like eating whole grains, fruits, and vegetables, while limiting alcohol and processed meats, can go a long way in protecting your health.

At e-Alert, we’re committed to helping you navigate the often-confusing world of health advice.

So, the next time you hear someone demonizing milk, remember: a glass a day could do more than just strengthen your bones—it could help protect your colon, too.

To a glass of milk,

Rachel Mace
Managing Editorial Director, e-Alert
with contributions from the research team

P.S. “Purple plate” trick reduces colon cancer risk?

Sources:

Staff, S. (2025, January 15). Glass of milk a day keeps colorectal cancer away, massive study reveals. Study Finds. https://studyfinds.org/dairy-milk-keeps-colorectal-cancer-away/

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