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Perinatal risk factors for atopic disease in conscripts
Summary
Perinatal factors significantly influence allergic rhinitis risk in young men, unlike asthma. Early life events, such as older siblings and maternal age, are key determinants for allergic rhinitis but not asthma.
Area of Science:
- Epidemiology
- Allergy and Immunology
- Perinatal Medicine
Background:
- Atopic diseases in adulthood may originate from early-life events.
- Understanding perinatal influences on adult atopic conditions is crucial.
Purpose of the Study:
- To examine the association between perinatal risk factors and the prevalence of allergic rhinitis and asthma in conscripts.
- Investigating early life determinants of common allergic diseases.
Main Methods:
- Retrospective cohort study linking military and national birth registers.
- Included 149,398 male conscripts born in Sweden (1973-1975).
- Assessed current asthma and allergic rhinitis at conscription examinations.
Main Results:
- Younger maternal age, multiple gestation, prematurity, low birth weight, and perinatal asphyxia were linked to reduced allergic rhinitis risk.
- Older siblings, multiple gestation, and young maternal age were independent determinants of allergic rhinitis.
- Maternal age, birth weight, and multiple gestation were independent determinants of asthma, with differing effects compared to allergic rhinitis.
Conclusions:
- Allergic rhinitis in young adult men showed a strong association with perinatal events, unlike asthma.
- This suggests a closer link between allergic rhinitis and atopic sensitization.
- Asthma appears to have a more complex, multifactorial etiology.