The Biocultural Evolution of Lactose Tolerance

person holding ice cream on a cone

What is lactose? Lactose is the main sugar in milk. It needs to be broken down into simpler sugars (glucose and galactose) in order for your body to absorb it.1 Lactase is the digestive enzyme that helps this breakdown happen.1 Lactose is a key source of carbohydrates for young mammals, and is one of the first sugars infants are exposed to after […]