San Francisco --
Got Milk? If you do, take a moment to ponder the true oddness of being able to drink milk after you're a Baby.
no other species but humans can. And most humans can't either.
The long lists of food allergies some people claim to have can make it seem as if they're just Finicky Eaters trying to rationalize likes and dislikes. Not so. Eggs, Peanuts, tree nuts, Fish, shellfish soy and Gluten all can Wreak Havoc on the Immune System of allergic individuals, even causing a deadly reaction called Anaphylaxis.
But those Allergic Reactions are relatively rare, affecting an estimated 4% of adults.
First off, it's not actually an Allergy in that there's not an immune response.
People who are lactose intolerant can't digest the main Sugar lactose found in milk. In normal humans, the Enzyme that does so lactase stops being produced when the person is between two and five years old. …