Pregant women subjected to traumatising stress are more likely to give birth to children who develop schizophrenia, according to a study published Thursday.
"The kind of stress in question are those that would be experienced in a natural disaster such as an earthquake or hurricane, a terrorist attack, or a sudden bereavement," explained lead author Dolores Malaspina, a researcher at New York University's School of Medicine.
About Schizophrenia
Schizophrenia is a mental disorder characterized by symptoms of thought, behavior and social problems.
Schizophrenia is a mental disorder characterized by symptoms of thought, behavior and social problems.
Malaspina and her colleagues looked at birth data for 88,829 people born in Jerusalem from 1964 to 1976 and cross-referenced it with Israel's national psychiatry registry.
They found that the offspring of women who were in their second month of pregnancy during the height of the Arab-Israel war in June of 1967 -- also known as the "Six Day War" -- showed a significantly higher rate of schizophrenia as they entered adulthood.
Psychological Changes in Pregnancy - How to Deal - FAQs - Reference
Pregnancy is an experience of growth, change, enrichment and challenge. During the 40 weeks of pregnancy, the expectant mother will go through several physical and emotional changes.
Pregnancy is an experience of growth, change, enrichment and challenge. During the 40 weeks of pregnancy, the expectant mother will go through several physical and emotional changes.
Females who had been in their second month of fetal life during the conflict were 4.3 times more likely to develop the debilitating mental disease than women born at other times.
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The researchers verified that other potential influences such as low birth weight or calorie intake had not played a role.
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"The placenta is very sensitive to stress hormones in the mother. These hormones were probably amplified during the time of the war," she said.
The maximum period of impact occurred early in the gestation period, especially in the second month, said the study, published in the Britain-based open access journal BioMed Central Psychiatry.
Earlier research has also shown that schizophrenia can follow intrauterine stress.
One study looked at the impact of bereavement, comparing the offspring of mothers in Finland whose husbands died during their pregnancy with similarly bereaved women whose partners died after delivery.
The incidence of schizophrenia was considerably higher in the first group, especially when the husband's death occurred early in gestation.
"There is overwhelming experimental evidence that stress to pregnant mammals alters neurodevelopment in the offspring and affects their subsequent behavior, both in childhood and as adults," Malaspina concluded.
"The knowledge that maternal stress affects the fetus has important implications for mental health in a world threatened by acute violence and war," she said.
Schizophrenics often hear voices, and may believe that other people are reading their minds or controlling their thoughts.
These frightening experiences can cause social withdrawal and extreme agitation.
There is no known cure for the chronic disorder, which affects approximately one in 200 people, emerging in men in their late teens and early 20s, and a decade later in women, according to the World Health Organisation.
Source-AFP
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