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Food Allergies Higher in City Kids

Food Allergies Higher in City Kids

Children raised in cities are more likely to have food allergies than those raised in rural areas according to a recent study from Clinical Pediatrics. An estimated 5.9 million children under age 18 — one out of every 13 children — now have a potentially life-threatening food allergy, of the sort that causes a severe allergic reaction that could lead to death, with a drop in blood pressure, trouble breathing and swelling of the throat. Researchers examined data for 38,465 children, 18 years and under, who comprised a representative sample of U.S. households.

A 2011 study in Journal of Allergy and Clinical Immunology found that, every three minutes, an American ends up in the emergency room from a food-allergic reactio

The Clinical Pediatrics study is the first to look at children’s food allergies based on geographic location. 9.8 percent of children living in urban areas were found to have food allergies vs. 6.2 percent of children in rural areas. Wherever children live, those that have food allergies have experienced a severe, life-threatening reaction to food. Certain states — Nevada, Florida, Georgia, Alaska, New Jersey, Delaware, Maryland and the District of Columbia — had the highest rates of food allergies.

Children in urban areas were also more likely than those in rural areas (2.8 percent vs. 1.3 percent) to have peanut allergies, and to have shellfish allergies (2.4 percent vs. 0.8 percent).

Children living in cities have also been found to have higher rates of related conditions such as asthma, eczema, allergic rhinitis and conjunctivitis, says lead author Ruchi Gupta, M.D., an assistant professor of pediatrics at Northwestern University Feinberg School of Medicine and a physician at the Ann & Robert H. Lurie Children’s Hospital of Chicago. Gupta noted that some of her future research will focus on investigating possible environmental causes for the higher rate in food allergies among children in the city.

Gupta’s research was funded by the The Food Allergy Initiative (FAI), a nonprofit that  concerned parents and grandparents founded in 1998.

Why Are Kids in Urban Areas More Likely to Have Food Allergies?

As for why children in urban areas have higher rates of food allergies, Science Daily notes these hypotheses:

One hypothesis is that exposure early in life to certain bacteria associated with rural living may protect against hereditary hypersensitivity to certain allergens. Or, many pollutants encountered in urban areas may trigger the development of these allergies.

Indeed, other research in Science magazine has given weight to the phenomenon of people who grow up on farms being less likely to have immune system-related illnesses than people who grow up in cities and to the “hygiene hypothesis,” according to which children exposed in early life to more microbes — from other children, from animals — end up with immune systems that are better able to tolerate the irritants that cause asthma and related conditions including food allergies. Other studies have found that auto-immune diseases are more common in people in who move from developing regions to more developed countries, to live no longer in rural areas but cities.

 

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41 comments

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7:51AM PST on Dec 11, 2012

Thank you Kristina, for Sharing this!

2:50PM PST on Dec 10, 2012

Cities have more toxins/pollutants and kill us quicker.

5:09AM PDT on Jul 9, 2012

no other way to say it - a lot of people in cities live far more plastic-craptastic lives than in rural areas. And are overmedicalised to a greater extent and on top of that live with more pollution

5:05AM PDT on Jul 9, 2012

This must be due to higher pollution levels.

8:55AM PDT on Jun 22, 2012

I hope with this, we stop destroying all the forests and cutting down all the trees. We need to replant them!

1:30PM PDT on Jun 18, 2012

interesting thanks

12:26PM PDT on Jun 17, 2012

Thank you

9:51AM PDT on Jun 15, 2012

Hi Patti;

I, too, spend many a summer up in the Borscht Belt, mostly at Kucheleins. The Saturday night movies at the casino. The card games. Thursdays, the chow-chow cup wagon would come by and salamander hunting and hikes in the forest and the stars at night were glorious. And, in August, the Orange County Fair in Middletown! It was fun.

11:43AM PDT on Jun 14, 2012

No surprise

8:40PM PDT on Jun 13, 2012

Makes sense

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