A new study has uncovered a surprising connection between one of the world’s most common beverages—milk—and a reduced risk of colorectal cancer in women. While milk is long known for its bone-strengthening calcium, researchers now say it may also play a role in protecting against one of the most common and deadly forms of cancer.

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The Research Behind the Claim

Published in a recent medical journal, the study tracked the dietary habits and health outcomes of thousands of women over several years. Researchers found that women who consumed at least one glass of milk per day had a statistically lower risk of developing colorectal cancer compared to those who drank little or no milk.

The effect appeared to be most significant in postmenopausal women, though benefits were observed across different age groups.

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Why Milk Might Protect the Colon

So what’s in milk that helps?

• Calcium: Known to bind with cancer-causing substances in the colon, reducing their harmful impact.

• Vitamin D (in fortified milk): Plays a role in cell growth regulation and may help suppress cancer cell development.

• Conjugated linoleic acid (CLA): A fatty acid naturally found in dairy that has shown anti-cancer properties in lab studies.

While more research is needed to confirm the mechanisms, scientists believe a combination of these nutrients contributes to milk’s protective effect.

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Not a One-Size-Fits-All Recommendation

Experts caution that milk isn't a cure or guaranteed prevention. Genetics, lifestyle, and other dietary habits also play major roles in cancer risk. Additionally, some people may be lactose intolerant or have ethical or dietary reasons for avoiding dairy.

“This study doesn’t mean everyone should rush to drink milk,” said Dr. Elaine Matthews, a nutrition epidemiologist. “But for women who already consume dairy, it’s reassuring to know there may be additional benefits.”