[gergov]

I'm not up to date on the science, but my dad was old - born in '43 - and worked as a teacher, so he could see several generations grow up. He was tall for his generation, but by the time I was a teenager, he was tiny even compared to his teenage students. I was a head taller than him even before he started "old man shrinking".

He always pointed at food, that the generations after him had access to better stuff and more milk. The shortest member of my family is my niece who is totally anti-milk, but that's just anecdata.

So it might be some other macro-factor influencing growth, with milk being the most glaringly visible item on the table. But it does kind of make an intuitive sense, and the dutch are freakishly tall while they have some of the best dairy products in the world

[nextos]

Not only freakishly tall, their average grew 20 cm in less than a century!

Apparently, aside from better food, natural selection also had an effect [1].

[1] https://royalsocietypublishing.org/doi/full/10.1098/rspb.201...