milk doesn't do either. the USA drinks more milk than any other country and we have the worst bone health by far.
milk actually leeches calcium from your bones.
it is an extremely unnatural thing to consume, we never throughout human history went up to an animal in the forest and milked it. dairy farming did not even start in the USA till the early 1900's and it was a ponzi scheme to sell sick cows to naive German immigrants throughout the midwest. it was a get rich scheme grift and many lost their life savings and had to sell their land. very horrible what they did to those poor people.
since then the dairy industry spends 100K per day trying to move their product. less and less people are drinking milk, the industry will be gone in 25 years
and every ounce of milk sold in the USA is pasteurized anyway, so any scant nutrition gets zapped away anyway.