| @lalalala: Most adult humans lose the ability to consume milk without getting digestive problems. It's the "normal" way that in all likelihood evolved that way since that would prevent elder siblings from "stealing" breast milk from infants. Some groups of humans, however, have developed a mutation that allows them to safely consume milk and dairy products. Rule of thumb for this: Look north and/or look cattle based society. Wikipedia has a neat little map on this. Since most of the population of the developed world carries that mutation, we tend to not even know it's "special". |