Intestinal lactase phlorizin hydrolase is the brush border disaccharidase responsible for the digestion of dietary lactose. In the majority of the world’s population lactase activity does not persist ...

After childhood, about two-thirds of the world’s human population loses the ability to digest milk. As far as we know, 100% of nonhuman mammals also lose this ability after weaning. The ongoing ...

For thousands of years, Europeans consumed milk products despite lacking an enzyme needed to avoid gastrointestinal discomfort, according to a new study. By Carl Zimmer In many ways, humans are weird ...