Note the argument against some dairy items in this study.
The reference to dairy in the above link is specifically:
"....Despite very limited data on dietary factors in relation to multiple myeloma, the findings from this study concur with previously published studies, suggesting an inverse association for consumption of fish, cruciferous vegetables and green vegetables, and a positive association for some dairy products".
(Note that "positive association" in the above article means that it is linked to multiple myeloma. An inverse association means less incidence of multiple myeloma).
Now look at the worldwide distribution of multiple myeloma by regions of the world (note the lower incidence of multiple myeloma in regions like Asia and Africa, where milk consumption is quite a bit lower than in NA and Europe).
http://www.cancerresearchuk.org/cancer-info/cancerstats/types/myeloma/incidence/uk-multiple-myeloma-incidence-statistics
If you really want to get into this, compare the above worldwide multiple myeloma incidence graph with the ww milk consumption graphs here (this is hardly a scientific link as you can easily identify other items that you could attribute to the similarities of the distributions on a region-by-region basis, including other dietary components such as grain or meat, but it is interesting nonetheless).
http://www.geocurrents.info/cultural-geography/culinary-geography/global-geography-of-milk-consumption-and-lactose-intolerance
Gets you thinking, doesn't it? Now, go enjoy a Superbowl pizza
