i get the opposite take from this info. the fact that, in just 10,000 years, the gene spread to over 1/3 of the population shows how useful of an adaptation it is.
Of course it’s useful. Particularly while kids are young, it’s a nutrient-dense food source that helps fuel immune systems being uniquely taxed by our post-agrarian densification (and cultivation of farm mammals immunologically similar to us, thereby giving rise to plagues).
The fact that it’s new means it’s necessarily loosely integrated. So if you aren’t in a calorie-deficient dietary environment, it follows that it can be assumed to not be an ideal nutrient source (even while remaining an ideal food source). And we see that. Milk consumption causes all manner of inflammatory responses. Because of course. It’s, in essence, another mammal’s filtered blood.
Of course it’s useful. Particularly while kids are young, it’s a nutrient-dense food source that helps fuel immune systems being uniquely taxed by our post-agrarian densification (and cultivation of farm mammals immunologically similar to us, thereby giving rise to plagues).
The fact that it’s new means it’s necessarily loosely integrated. So if you aren’t in a calorie-deficient dietary environment, it follows that it can be assumed to not be an ideal nutrient source (even while remaining an ideal food source). And we see that. Milk consumption causes all manner of inflammatory responses. Because of course. It’s, in essence, another mammal’s filtered blood.