Soy

Vitamin E and tocopherols

Tocopherols are most often soy-derived unless the label specifies an alternative source (e.g., "sunflower-derived vitamin E").

"Natural flavors" and "natural flavor"

Soy-derived flavoring components are common and not disclosed.

Mono- and diglycerides

Frequently soy-oil derived. Allergen rules don't require disclosure of the source, so soy-allergic and soy-avoiding consumers can't tell from the label.

Polysorbate 60 and Polysorbate 80

Fatty acid source is often soy. Not disclosed on the label.

DATEM (Diacetyl Tartaric Acid Ester of Mono- and Diglycerides)

Built on mono- and diglycerides that are frequently soy-derived. Soy-avoiding consumers eating commercial bread are likely consuming soy-derived DATEM regularly without notice.

Magnesium stearate and calcium stearate

Stearic acid source can be soy. Soy-avoiding supplement users have no way to know from the label.

Generic "vegetable oil" (without a named source)

Generic vegetable oil is most frequently soybean oil. Users avoiding soy (allergy or inflammation management) often can't tell from the label.