an update to this 2014 topic, pingin’ it out there.
Why Did Europeans Evolve Into Becoming Lactose Tolerant?
Famine and disease from millennia ago likely spurred the rapid evolution of the trait on the continent
Brian Handwerk
Science Correspondent
July 27, 2022
https://www.smithsonianmag.com/science-nature/famine-and-diseases-likely-drove-europeans-ability-to-digest-milk-180980483/
We needed the vitamin D from dairy products.
One Word:
CHEESE.........................