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Previous but limited studies have shown an association between pre- and postnatal stress and allergy in children. A new study from the Karolinska Institutet in Sweden has shown that infants with low cortisol levels in their saliva develop fewer allergies than other infants. Cortisol is a stress-related hormone. The study looked at the salivary samples from 203 infants at 6 months of age, and at blood samples from these children at 6, 12 and 24 months of age. The saliva samples were collected in the morning, afternoon and evening. The results show that salivary cortisol level in the evening is associated with food allergy. Source: Journal of Allergy and Clinical Immunology First Published December 2011 |
