Strategies for preventing wheezing and asthma in small children

Area of Science:

• Pediatric Allergy and Immunology
• Environmental Health
• Public Health

Background:

• Allergy prevention guidelines aim to reduce the incidence of allergic diseases in children.
• Factors such as breastfeeding, maternal smoking, and home environment play a role in childhood allergies.

Purpose of the Study:

• To evaluate the impact of adherence to allergy preventive guidelines on the development of wheezing and asthma by age two.
• To assess the effectiveness of guidelines concerning breastfeeding, maternal tobacco smoke exposure, and home dampness.

Main Methods:

• A prospective birth cohort study (BAMSE) involving 4089 children born between 1994-1996 in Stockholm, Sweden.
• Data collected via questionnaires on heredity, environmental factors at 2 months, and symptom assessment at 1 and 2 years of age.
• Multiple logistic regression models were used to analyze the association between guideline adherence and wheezing/asthma outcomes.

Main Results:

• Children following all guidelines had significantly lower rates of recurrent wheezing (12.6%) and asthma (6.8%) compared to those exposed to risk factors.
• Adherence to guidelines showed a twofold reduction in asthma for children without allergic heredity and a threefold reduction for those with heredity.
• The attributable fraction for asthma due to guideline adherence was 23% overall and 33% in children with allergic heredity.

Conclusions:

• Family lifestyle aligned with allergy prevention guidelines is linked to a substantial decrease in recurrent wheezing and childhood asthma.
• The benefits of these guidelines are particularly evident in children with a predisposition to allergies.
• Further follow-up is needed to confirm the long-term risk reduction of these respiratory symptoms and diseases.