The word 'allergy' means an altered or abnormal tissue reaction after exposure to an antigen (also called an 'allergen') The substance most often is eaten or inhaled; some are even those caused by a scratch on the skin. Dust, pollen, and pet dander are all common allergens. Food like nuts, sea food, milk products, and fermented foods can be the cause of allergy symptoms in many people..

The allergic reaction occurs if the body tissues are sensitive to the allergen. The allergen may reach the tissues by direct contact with the skin or various mucous membranes of the organs or through the bloodstream after absorption. Almost any part of the body can be affected by allergies. The foods that one of the commonly cause allergic reactions are oranges, milk, eggs, wheat, fish and other sea foods, chocolates, tomatoes, and strawberries. One person may exhibit a skin allergy where as another have cat allergy. Some allergies are well known where as others are not. Perfume allergy and deodorant allergies are not so common.

A quantity of 400-500ml carrot juice or a combination of carrot juice with beet and cucumber juices, has been found beneficial in the treatment of allergies. In the case of mixed juices, 80ml each of beet and cucumber juices should be mixed with 250 ml of carrot juice to prepare 400-500 ml or half a litre of mixed juice. This should be taken once daily.