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Pediatr Allergy Immunol. 2015 Mar;26(2):153-60. doi: 10.1111/pai.12342.

Anthroposophic lifestyle and salivary cortisol are associated with a lower risk of sensitization during childhood.

Author information

1
Department of Neuroscience, Child and Adolescent Psychiatry, Uppsala University, Uppsala, Sweden; Vidarkliniken and Integrative Care Science Centre, Järna, Sweden.

Abstract

BACKGROUND:

Infants from anthroposophic families have low cortisol levels and low risk of IgE-sensitization during first 2 years of life. Our aim was to study the impact of an anthroposophic lifestyle and cortisol levels at 6 months on allergy sensitization up to age 5 years.

METHODS:

A total of 507 families participated from maternal healthcare centers. Parental lifestyle was categorized as anthroposophic, partly anthroposophic, or non-anthroposophic. Blood samples for analyzes of sensitization were obtained from parents at inclusion and from children at 6, 12, 24, and 60 months. Salivary samples were collected at home at 6 months.

RESULTS:

Sensitization increased from 2.9% to 26.0% in the anthroposophic group, from 8.4% to 26.8% in the partly anthroposophic group, and from 19.1% to 44.1% in the non-anthroposophic group. Children from anthroposophic families had lower cortisol levels in the morning, afternoon, and evening. The odds ratio (OR) for anthroposophic lifestyle was always <1 and lowest at 12 months (OR, 0.10; 95% CI, 0.03-0.36). Adjusting for cortisol levels at 6 months increased these ORs at 12 and 24 months. At the same ages, ORs for sensitization were elevated also for cortisol levels at 6 months. Analyzes in children not sensitized at 6 months confirmed the cortisol-related risk of sensitization.

CONCLUSIONS:

Children from families with an anthroposophic lifestyle have lower risk than comparisons of developing sensitization up to 5 years. This risk is partially explained by low cortisol levels during infancy. High cortisol levels at 6 months predict sensitization up to 24 months.

KEYWORDS:

Allergic sensitization; anthroposophic lifestyle; children; salivary cortisol; stress

PMID:
25620268
DOI:
10.1111/pai.12342
[Indexed for MEDLINE]

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