I guess they are referring to foods, and clove oil is technically not a food, but an extracted concentrate. Beware though, that too much antioxidants can be counterproductive and actually be harmful. Clove oil does have great value though to help improve certain health conditions. Its toxicity must be respected though, and it must be used with caution. I am exploring other essential oils(ginger, peppermint, cinnamon, etc.) and might add some of these to my regimen. I am sure that these also have their toxicity, so the dosages must be carefully controlled. Keep in mind though that all substances are toxic if overused. A very sad story. A woman in her 20s died while participating in a water drinking contest. The huge amounts of water depleted her electrolytes.