Your article says that “lactose, a sugar in milk, commonly elicits allergic reactions.” Lactose and many other carbohydrates don’t elicit an allergic response.

Jonathan Stapley
West Lafayette, Ind.

Lactose intolerance is the inability to digest significant amounts of lactose because there’s a shortage of an enzyme that breaks down milk sugar. This condition shouldn’t have been described as an allergic reaction .–B.