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There’s been a rise in “free-from” labeling on packaged foods over the past decade. This in part may be due to increases in food allergy and sensitivities, but it’s often a marketing tactic. As consumers adopt various styles of diets, they may be looking to avoid certain ingredients. For example, a person with celiac disease needs to avoid gluten (although many consumers choose to avoid gluten for no medical reason).

Sometimes the free-from ingredient labeling is useful (such as when someone with an allergy needs to identify certain ingredients in foods). Other times, these labels are misleading. It’s confusing when a label includes a free-from claim for an ingredient that wouldn’t normally be in the food product anyway — for instance, when orange juice is labeled “dairy-free” or “GMO-free.” Orange juice never contained either dairy or any genetically modified ingredients. The simple notion that a product is “free-from” also makes you think that it’s somehow better, or that the ingredient it is free from is “bad” or was removed.

Some food labels are free from so many different things that it may make you wonder, what is it actually? With the trend for gluten-free and dairy-free diets, these claims continue to cover packages. Labels may also include GMO-free, vegan, plant-based, egg-free, or nut-free. Some are just ridiculous, such as gluten-free water or GMO-free gin. Most of these labels are added for marketing purposes and don’t impact the health and safety of the food. But what do all of these free-from labels really mean?

 Gluten-free: This voluntary labeling regulated by the FDA means that the food bearing the claim doesn’t contain gluten or any gluten-containing grain.

 Dairy-free: While the FDA doesn’t allow false claims on packages, there’s no regulatory definition for the term dairy-free. Ideally, a food with this label wouldn’t contain any dairy products.

 GMO-free: This is sometimes misleading when there’s no GMO counterpart for the ingredient in question. For instance, it’s one thing to compare GMO soybean to non-GM soy. But because there’s no GM wheat, it makes no sense to label a wheat product “non-GMO.”

 Egg-free: Products containing eggs must be labeled “contains eggs,” but there’s no regulation for the egg-free claim.

 Nut-free: This is also an unregulated package claim. While nuts may not be an ingredient in the product, this claim doesn’t mean the product doesn’t contain the allergen, or was not processed in a factory that processes nuts.

 Vegan: While this term is clearly defined to mean a product doesn’t contain any ingredients of animal origin (including honey and gelatin), it isn’t regulated by the FDA.

The FDA requires companies to list ingredients on packaged foods and beverages. Certain foods or substances that cause common allergies have more specific labeling requirements. According to the Food Allergen Labeling and Consumer Protection Act of 2004, products containing any of the nine common food allergens — milk, egg, peanut, tree nuts, wheat, soy, sesame, fish, and shellfish — must be labeled. If you have a food allergy, you need to read labels carefully and avoid that food or ingredient. If in doubt, it’s best to read the package ingredient list for the allergens. Consult with an allergen specialist to determine the various names of ingredients related to common allergens.

There are food allergies, and there are also food intolerances.

 A food allergy occurs when the body’s immune system reacts to certain foods by making antibodies (IgE), and this causes typical allergic symptoms (itching, rashes, hives, swollen lips or tongue, stomach pain, vomiting, diarrhea, wheezing, or trouble breathing).

 A food intolerance can cause similar symptoms with digestion but doesn’t cause the immune response. Lactose intolerance (the inability to digest lactose, the sugar in milk), celiac disease (an intolerance to gluten), and Crohn’s disease (an inflammatory bowel disorder that often causes diarrhea) are all examples of food intolerance causes.

Unless you’ve been properly diagnosed by an allergist, there’s no health reason to avoid common allergens. According to the Asthma and Allergy Foundation of America, a small fraction of adults and children (almost 10 percent) have a true food allergy.