According to a literature review in the Iranian Journal of Public Health, milk might increase risk of various types of most cancers. : Fitness
“Meta-analysis of cohort data produced evidence of a clear dose-response relationship between advanced/aggressive cancer risk with milk intake, and between all prostate cancer risk and milk and dairy products.”
Overall, the WCRF/AICR panel concluded that “The evidence is inconsistent from both cohort and case-control studies. There is limited evidence suggesting that milk and dairy products are a cause of prostate cancer.”
That wikipedia web page mainly says that it has an impact and does not in the similar paragraph. If you need extra element I would glance deeper at the precise journals cited as a substitute of wikipedia.