dairy is basically calcium.  calcium is what clogs the arteries.  the dose makes the poison.

the reason there is so much calcium in dairy is the fetus has no real bones otherwise it would get stuck in vagina and never come out - dairy is meant to help the fetus solidify the bones.

for adults it helps to solidify your arteries ( make you nice and dead )

calcium also flushes magnesium out of the body.

this is regardless of any dairy tolerance or lack thereof.