And how? I would actually would like to know why you think this.
I could understand if not organic but even then i wouldn't say dairy is bad.
"How much pus is legally allowed in milk?
Somatic cell counts greater than a million per teaspoon are abnormal and “almost always” caused by mastitis. When a cow is infected, greater than 90% of the somatic cells in her milk are neutrophils, the inflammatory immune cells that form pus. The average somatic cell count in U.S. milk per spoonful is 1,120,000.Sep 8, 2011"

btw i consume dairy.