Allergy Asthma Institute

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Why is Asthma on the Rise?
Although several theories exist about why asthma rates have risen during the last two decades, there probably is no simple answer, says Calman Prussin, M.D., head of the clinical allergy and immunology unit at NIAID.

One theory is that people today, especially in developed countries, are spending more time indoors, Dr. Prussin says. We are therefore exposed to more indoor allergens, such as dust mite allergen, that cause asthma. 'Our houses are now hermetically sealed to save heating and cooling energy,' he notes, 'and unfortunately this causes more indoor allergen exposure.'

Another reason may be that people today live in cleaner, more sanitary conditions than they did before the industrial revolution, relatively free of disease-causing viruses and bacteria, he says. This clean living affects our immune system. The immune system's defensive white blood cells, called T cells, have two basic 'settings,' he explains. Th1 cells fight infectious viruses and bacteria. Th2 cells fight parasites but are also involved in allergic reactions.

'We are exposed to fewer viruses and bacteria than people were 100 years ago, so perhaps our immune systems have not learned to make Th1 cells as well,' Dr. Prussin says. 'That means we have a greater proportion of Th2 cells in our bodies, which might lead to more allergies and asthma.'

Other theories point to increased levels of air pollutants, a decline in the amount of exercise people get, or rising obesity as factors in the increase of asthma. - NIAID

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North Shore Allergy and Asthma Institute
Patient Education. Staff. Patient Services. Practice homepage. Practice information. Patient education. Staff information. Comments & thoughts. John E. Rooney, MD, PhD. Allergy, Asthma and Immunology

CenterWatch Clinical Research Center Profile (367): Family Allergy and Asthma Research Institute; Louisville, KY
Center Overview. Allergy & Asthma Associates is a group of multitherapeutic outpatient clinical sites specializing in research, education, testing and treatment of pediatric and adult allergy and asthma patients. ... The Research Center, Allergy and Asthma Research Institute (AARI) is located in the South End of ...

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... American College of Allergy, Asthma and Immunology ... and Asthma at School. Anaphylaxis - Managing Allergies and Asthma at SchoolNational Institute of Allergy and Infectious ...

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... American Academy of Allergy Asthma and Immunology. Management. Asthma & Allergy Prevention - National Institute of Environmental Health Sciences ...

MedlinePlus: Allergy
... American Academy of Allergy, Asthma, and Immunology ... Academy of Allergy, Asthma, and Immunology) Living with Allergies: Resources for Patients ( National Institute of Allergy ...

ALLERGY AND ASTHMA SPECIALISTS
... Allergy & Asthma Specialists, P.A. physicians have been conducting important scientific research through their affiliation with Clinical Research Institute ... asthma, allergy, migraine ...

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last actualized January 5, 2004 csweber@siaf.unizh.ch. associated with the University of Zürich

Disease Category Listing (16): Asthma
CenterWatch Listing of Clinical Research Trials for Asthma ... Little Rock; Little Rock Allergy & Asthma Clinical Research Center ... Adult and Adolescent Asthma Study. Louisville; Family Allergy and Asthma Research Institute. Adult Asthma Study ...

Allergy Statistics, NIAID Facts and Figures
... American Academy of Allergy, Asthma and Immunology (AAAAI). The Allergy Report: Science ... of Communications and Public Liaison. National Institute of Allergy and Infectious Diseases ...

National Institute of Allergy and Infectious Diseases Home Page (NIAID), National Institutes of Health
NIAID, part of the National Institutes of Health, supports biomedical research to prevent, diagnose and treat illnesses such as AIDS, tuberculosis, malaria, Asthma and allergies.

MedlinePlus: Asthma
... Exercise-Induced Asthma ( American Academy of Allergy, Asthma, and Immunology) Guide to Health ... Play Unexpected Role in Asthma ( National Institute of Allergy and Infectious Diseases ...

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