How does yogurt help protect against colorectal cancer?

According to a Harvard Medical School study following 130,000 people over 30-40 years, regular yogurt consumption (two or more servings weekly) is associated with lower rates of aggressive colon cancer. Researchers found that yogurt contains Bifidobacterium strains that promote gut health and enhance the gut barrier function. The longitudinal study demonstrated that long-term yogurt intake specifically reduces the risk of proximal Bifidobacterium-positive cancer. This suggests yogurt's beneficial bacteria create a stronger intestinal barrier, providing protection against certain aggressive forms of colorectal cancer.