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Stress in young kids separated from parents may leave long-term genetic impact
According to a recent study, increased levels of stress hormone cortisol in young children who are separated from their parents, especially mothers, could have a long-term genetic impact on future generations.
Washington D.C.: According to a recent study, increased levels of stress hormone cortisol in young children who are separated from their parents, especially mothers, could have a long-term genetic impact on future generations.
In an analysis published by the Journal of the Royal Society of Medicine, experts in the emotional needs of small children say that several studies show that small children cared for outside the home, especially in poor quality care and for 30 or more hours per week, have higher levels of cortisol than children at home.
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Professor Sir Denis Pereira Gray, who wrote the paper with two colleagues, said: Cortisol release is a normal response to stress in mammals facing an emergency and is usually useful. However sustained cortisol release over hours or days can be harmful.
The authors said that raised cortisol levels are a sign of stress and that the time children spend with their parents is biologically more important than is often realised.
Raised cortisol levels are associated with reduced antibody levels and changes in those parts of the brain which are associated with emotional stability.
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Environmental factors interact with genes so that genes can be altered, and once altered by adverse childhood experiences, can pass to future generations. Such epigenetic effects need urgent study said the authors.
Sir Denis added: Future research should explore the links between the care of small children in different settings, their cortisol levels, DNA, and behaviour. (ANI)