Scientists do not yet thoroughly understand just how the body of an individual becomes sensitive to a substance that is harmless or even wholesome for the average person. Milk, wheat, and egg, for example, rank among the most healthful and widely used foods. Yet these foods can cause persons sensitive to them to suffer greatly. At first, the body of the individual is not harmed by coming into contact with the substance. After a varying interval of time, usually longer than a few weeks, the body becomes sensitive to it, and an allergy has begun to develop. Sometimes it's hard to figure out if you have a food allergy, since it can show up so many different ways. Your symptoms could be caused by many other problems. You may have rashes, hives, joint pains mimicking arthritis, headaches, irritability, or depression. The most common food allergies are to milk, eggs, seafood, wheat, nuts, seeds, chocolate, oranges, and tomatoes. Many of these allergies will not develop if these foods are not fed to an infant until her or his intestines mature at around seven months. Breast milk also tends to be protective. Migraines can be set off by foods containing tyramine, phenathylamine, monosodium glutamate, or sodium nitrate. Common foods which contain these are chocolate, aged cheeses, sour cream, red wine, pickled herring, chicken livers, avocados, ripe bananas, cured meats, many Oriental and prepared foods (read the labels!). Some people have been successful in treating their migraines with supplements of B-vitamins, particularly B6 and niacin. Children who are hyperactive may benefit from eliminating food additives, especially colorings, and foods high in salicylates from their diets.

The phrase "set off" is closest in meaning to______________.

Câu hỏi liên quan

• According to the passage, an exuberant tone of voice may be an indication of a person’s ____________.

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ZUNIA12

• Greenhouse gases cause the warming up of the Earth because they ____.

• The word "astonished" in paragraph 4 can be best replaced by ........

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• The word “These” in paragraph 3 refers to__________.

• According to the passage, which of the following sentence is NOT true?

• Which of the following terms is defined in the passage?

• According to the passage, which of the following sentence is NOT true?

• People nod their head to say no in ...............

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• What does the word “depletion” in paragraph 2 probably mean?

• The words “this faculty” refers to the sea cucumber’s ability to ....

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• Throughout the passage, the author implies that the Mandans _____.

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• According to the passage, why did colonial printers avoid major publishing projects?

• According to the passage, a fair division of labour is that ...................