I don't need to "prove" anything - I'll leave that to the researchers. I will leave these tidbits - food for thought, as it were - just so that you can see that there is at least a possibility that you might not have all the information before you dig your heels in any deeper.
https://www.pcrm.org/news/blog/white-lies-five-myths-debunked
https://www.mcgill.ca/oss/article/food-health-science-science-everywhere/milk-hormones-and-cancer
https://iphysio.io/osteoporosis/
If you choose to ignore this and scroll on, that's okay too - no hard feelings.