ESTIMATED NUMBER OF PATIENTS WITH FOOD ALLERGY IN JAPAN: THE PRESENT STATUS AND ISSUES REGARDING EPIDEMIOLOGICAL INVESTIGATION

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  • Matsubara Yuri
    Division of Public Health, Center for Community Medicine
  • Ae Ryusuke
    Division of Public Health, Center for Community Medicine
  • Ohya Yukihiro
    Division of Allergy, Department of Medical Specialties, National Center for Child Health and Development
  • Akiyama Hiroshi
    Division of Foods, National Institute of Health Sciences
  • Imai Takanori
    Department of Pediatrics, Showa University
  • Matsumoto Kenji
    Department of Allergy and Clinical Immunology, National Center for Child Health and Development
  • Fukuie Tatsuki
    Division of Allergy, Department of Medical Specialties, National Center for Child Health and Development
  • Aoyama Yasuko
    Division of Public Health, Center for Community Medicine
  • Makino Nobuko
    Division of Public Health, Center for Community Medicine
  • Nakamura Yosikazu
    Division of Public Health, Center for Community Medicine
  • Saito Hirohisa
    National Research Institute for Child Health and Development

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Other Title
  • 日本における食物アレルギー患者数の推計：疫学調査の現状と課題
  • ニホン ニ オケル ショクモツ アレルギー カンジャスウ ノ スイケイ : エキガク チョウサ ノ ゲンジョウ ト カダイ

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Abstract

<p>Background: The number of patients with food allergy in Japan is increasing year by year, although the precise prevalence of them is not clear. We aimed to determine the estimated number of people with food allergies in Japan and produce new methods of the investigation of them.</p><p>Methods: We determined the number of people with food allergies using government data and statistics such as demographic statistic and the number of students.</p><p>Results: In infants, the number of patients with a food allergy was 800000 as per the self-reported prevalence; however, as per the physician's diagnoses, 300000-500000 of them had a food allergy. In students, the selfreported number was 600000, while 350000 cases were diagnosed by physicians. In adults, the consumer agency investigated the patients who visited the hospital with the immediate hypersensitivity. In this study, the participants were limited to patients who visited the hospital. This made the estimation of the overall prevalence of food allergy in Japan.</p><p>Conclusion: For children, if we add the questionnaire to the existing study, which questions them regarding the symptoms of food allergy, the diagnosis by the physician, and the blood test, we can better investigate the prevalence of food allergies and changing pattern by the year. In adults, we propose that future investigations consisting of the National Health and Nutrition Survey and a comprehensive survey of living conditions should be conducted, because few studies have reported on food allergies.</p>

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