Avoid olive oil in any form. Soon after my extensive food allergies diagnosis, I visited a nutritionist. There has been cases of quite severe reactions to olive oil including severe diarrhea and even eczema when applied to skin. Rancid or oxidized oil will have some of its free fatty acids removed to create a more palatable taste. When oleic acid helps release DAO into your blood stream it degrades free amines and histamines, which relieve symptoms of histamine intolerance. During the processing of pure or pomace oil, heat, steam, and solvents remove the more aromatic hydrocarbons and probably denature many of the proteins which could cause food allergies. With restaurants using olive oil in their recipes with increasing frequency, and with his travels to place like Greece and Spain, this sensitivity has become a real liability for him. Olive and Olive Oil Isaksson and Bruze note that contact allergy to olive oil is considered rare. At the time I was eating mostly fruits and vegetables and rice, but I was still sick. These include corn oil, safflower oil, canola oil, palm oil, palm kernel oil, and coconut oil. Food prepared with it, prompts within a half hour, an explosive need for the restroom and pretty much ruins the remainder of the day. My boyfriend has a sensitivity to olive oil. With the exception of a single report of coconut oil allergy contained in a baby formula published in 1994, there are no reports of food allergy to these vegetable oils published in the medical literature. One must avoid it. Olive oil is one of the primary sources of oleic acid, which increases the release of diamine oxidase (DAO) into the bloodstream by 500%. Treatment of olive oil allergy Some of the olive oil allergy treatments are: For rashes, hives and other reactions, one’s doctor may prescribe corticosteroid; Antihistamines are also good for allergic reaction; Prevention of olive oil allergy. A review of studies, however, identified twenty cases of contact allergy to olive oil; three of these had occupational hand eczema as a result of olive oil. After reviewing the very short list, the nutritionist asked me what type of oil I was cooking the veggies… Fearful I was developing even more allergies, I kept a food journal. Olive Oil allergy is an uncommon condition & to the oil being adulterated. Olive oil is also used in food preparation.