Food Allergies & Intolerance

Allergic to Milk? It Might Be in Your Dark Chocolate

If you or someone in your household is allergic to milk, take heed: a recent study by the Food and Drug Administration (FDA) tested 100 dark chocolate products and found that many contained milk. More importantly, you can’t always tell that’s the case simply by reading the food label.

“This can be a problem, since even one small bite of a product containing milk can cause a dangerous reaction in some individuals,” says researcher Binaifer Bedford, M.S., an Oak Ridge Institute for Science and Education (ORISE) fellow at FDA.

Milk is one of eight major food allergens (the others are wheat, eggs, peanuts, tree nuts, fish, Crustacean shellfish and soybeans). U.S. law requires foods containing a major food allergen to provide its name—in this case, milk—on the label. This is one of the ways to help ensure consumers know what’s in the food they’re eating. Undeclared (not listed on the label) allergens are a leading cause of food recall requests by the FDA.

From September 2009 to September 2012, about one-third of foods reported to FDA as serious health risks involved undeclared allergens. The five food types most often involved in food allergen recalls were bakery products, snack foods, candy, dairy products and dressings. Within the candy category, there were many reports of undeclared milk in dark chocolate.

A manufacturer may not intend to use milk in a dark chocolate product, Bedford says. But if the dark chocolate product shares equipment with, for example, a milk chocolate product, traces of milk may inadvertently wind up in the dark chocolate. After hearing from consumers who had eaten dark chocolate and experienced harmful reactions, FDA tested 100 dark chocolate bars for the presence of undeclared milk. The selected bars were obtained from different parts of the U.S. and each bar was unique in terms of product line and/or manufacturer.

“We divided the bars into categories based on the statements on the labels,” Bedford explains. The categories included varying precautionary statements such as “may contain milk” or “may contain traces of milk”; statements such as “dairy-free” or “allergen-free”; no mention of milk on the label; and inconsistent statements.

Even a consumer who carefully reads the label may be confused by a statement such as “vegan” (which implies that no animal-derived products were used) along with a precautionary statement referring to the presence of milk, Bedford says. Moreover, a consumer will not know how much or whether milk is present when a product is labeled “may contain traces of milk,” or when the product was manufactured with the same equipment used for products containing milk.

What the FDA Study Found