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Perinatal Factors Increase Risk of Obsessive Compulsive Disorder

by Shirley Johanna on October 5, 2016 at 8:56 PM
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Perinatal Factors Increase Risk of Obsessive Compulsive Disorder

The risk for children developing obsessive compulsive disorder (OCD) later in life is linked to a range of perinatal factors, says a new study.

Complications in the perinatal period have been associated with other psychiatric disorders. Few studies suggest perinatal complications may also play a role in OCD but the studies had weaknesses that preclude firm conclusions.

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Gustaf Brander, M.Sc., of the Karolinska Institutet, Stockholm, Sweden, and coauthors examined a potential link using a population-based birth cohort of 2.4 million children in Sweden born between 1973 and 1996 and followed up through 2013. Of the 2.4 million individuals, 17,305 people were diagnosed with OCD at an average age of 23.

The authors report that independent of shared familial mitigating factors, maternal smoking during pregnancy, presenting as breech, delivery by cesarean section, preterm birth, low birth weight, being large for gestational age and Apgar distress scores were associated with a higher risk for developing OCD.
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The mechanism linking OCD to perinatal factors remains to be identified.

Limitations include a study group weighted toward more severe cases that does not represent the totality of all patients with OCD in Sweden. Also, there are missing cases.

"The findings are important for the understanding of the cause of OCD and will inform future studies of gene by environment interaction and epigenetics," the study concludes.

The study is published in the JAMA Psychiatry.

Source: Eurekalert
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