My sister's late husband was Dutch; he was tall and both my nieces are too. And the Masai who drink lots of milk (and blood it has to be said) are tall. My husband grew 5cm in a year after arriving in UK many years ago. He was calcium deficient and his spine was crumbly. Once he'd had lots of butter, milk and yoghurt his health improved no end, and he didn't look half so fragile.
We drank gallons of milk as children, and lots of cheese as it was relatively cheap. Also there was school milk, 1/3 of a pint daily for every child. Plus cod liver oil and 'radio-malt'. And Government bottles of orange juice concentrate. Just after the War they did their best to ensure the children thrived. (should that be 'throve?)
I'm hoping my over-consumption of dairy stuff will ward off osteoporosis. (That's my excuse)