Creates an imbalance
The study included families with five-year-old children. The parents responded to questions about stress, and also got to indicate which difficult life events affected the family, for example divorce or unemployment. Based on the responses to the questions, a group of children where they could expect to find a high level of stress in the family, and a group of children where they expected the level of stress to be more normal, were identified.
Article: Psychological stress in children may alter the immune response by Emma Carlsson, Anneli Frostell, Johnny Ludvigsson and Maria Faresjö. Journal of Immunology 5 February 2014, DOI: 10.4049/jimmunol.1301713.