Food allergies are on the rise, affecting 15 million Americans, pesticides and tap water could be partially to blame. High levels of dichlorophenols, a chemical used in pesticides and to chlorinate water, when found in the human body, are associated with food allergies. An increase in food allergy of 18% was seen between 1997 and 2007. The most common food allergens are milk, eggs, peanuts, wheat, tree nuts, soy, fish, and shellfish, and symptoms can range from a mild rash to a life-threatening reaction known as anaphylaxis.
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When you move from one town to another, you can pick up a whole new set of allergies. For instance, people say that about five years after moving to Austin, Texas, you start to get your "Austin allergies." Is that possible?

It’s possible for some people to acquire new allergies, and three to five years of exposure may be enough to trigger them. But there are other reasons why you may feel worse after moving from one city to another, especially a distant city. For example, some people are more sensitive to dry climates, he said, while for others, humid areas can make their noses feel horrible. The air in urban areas may have more irritants, like dust and mold from older buildings, than that in rural settings.
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Sometimes a little can cause a lot of problems: March’s unseasonably warm weather created a burst of pollen that brought this year’s allergy season weeks earlier than usual, and the worst may be yet to come. Pollen counts have been high, but several areas across the United States haven’t peaked yet. Pollen was so bad last week in Moscow that the sky turned GREEN.
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