http://usatoday30.usatoday.com/tech/sci ... ance_N.htm
Quote:
Somewhat less than 40% of people in the world retain the ability to digest lactose after childhood. The numbers are often given as close to 0% of Native Americans, 5% of Asians, 25% of African and Caribbean peoples, 50% of Mediterranean peoples and 90% of northern Europeans. Sweden has one of the world's highest percentages of lactase tolerant people.
[...]
Today, the highest proportion of people with lactase persistence live in Northwest Europe, especially the Netherlands, Ireland and Scandinavia.
I don't know why, I just know that we have it easy that way here.
I'm not sure if I've had it. I don't really recall any such incident but I could be mistaken. The term is pretty new to me.
The next person has never been so upset that they were left speechless