1·Rather than being caused by an overenthusiastic immune system, milk intolerance, for example, results from a lack of the enzyme the body needs to break down lactose, the main sugar in milk.
举例来说，不耐乳症不是由免疫系统的过分热情引起的，而是缺乏一种酶的结果，而身体需要这种酶来分解牛奶中主要的糖——乳糖。
2·Some people have trouble digesting lactose, a carbohydrate in milk and milk products, because of the deficiency of enzyme lactase in the body.
有些人无法消化乳糖，一种在牛奶和奶制品中的碳水化合物，这是因为在他们的身体中缺少乳糖消化酶。
3·The most common culprits are gluten, lactose, and nuts – i.e dairy, wheat/bread items, nuts.
最常见的诱因有麸质，乳糖以及坚果。 例如，乳制品，大麦|面包系列，坚果。
4·Cheese: This is a safe snack for dogs, but just like humans, they can experience lactose intolerance, so monitor your dog's reaction.
奶酪: 这是狗狗安全而美味的零食，但和人一样，狗狗也可能会有乳糖不耐症。 所以给狗狗奶酪时要观察它的反应。
5·What you're supposed to know: Milk (cow, goat, sheep, human . . .) contains a sugar called lactose, which is normally broken down by the enzyme lactase.
必备知识： 奶类（包括牛奶、山羊奶、绵羊奶及母乳等）含有一种叫作乳糖的糖类，它通常由乳糖酶分解。