{"id":14771,"date":"2022-03-02T16:05:41","date_gmt":"2022-03-02T21:05:41","guid":{"rendered":"https:\/\/last-drum.flywheelsites.com\/?p=14771"},"modified":"2024-04-28T17:39:27","modified_gmt":"2024-04-28T22:39:27","slug":"pregnancy-spacing-may-affect-odds-of-asd","status":"publish","type":"post","link":"https:\/\/autism.org\/pregnancy-spacing-may-affect-odds-of-asd\/","title":{"rendered":"Pregnancy spacing may affect odds of ASD"},"content":{"rendered":"

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Mothers of children with autism spectrum disorders (ASD) may reduce their odds of having another child with ASD if they time a second pregnancy to occur 2.5 to 3 years after the birth of the child with ASD, according to a new study.<\/p>\n

Gavin Pereira and colleagues studied data from more than 925,000 births in Denmark, Finland, and Sweden. More than 9,300 of the children in the birth cohort were later diagnosed with ASD.<\/p>\n<\/div>

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The researchers found that the association between ASD and the intervals between pregnancy was U-shaped for all three countries. Pereira says, \u201cOur research found that the siblings of children with autism were less likely to be diagnosed on the spectrum if there was a 30- to 39-month gap between both pregnancies.<\/p>\n

Across the general population, this study also showed that children born to mothers who became pregnant again three months after giving birth had a 50 percent higher chance of being diagnosed with autism, and those born five years later had a 24 percent greater chance.\u201d<\/p>\n

Pereira comments, \u201cThe results of this large-scale, multi-country research may help to inform family planning counseling, particularly for those families that are already at a higher risk because of a genetic history of neurological disease.\u201d He and his team speculate that \u201cabout 5% to 9% of autism cases might be avoided by optimizing birth spacing.\u201d<\/p>\n

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\u201cOptimal interpregnancy interval in autism spectrum disorder: A multi-national study of a modifiable risk factor,\u201d Gavin Pereira, Richard W. Francis, Mika Gissler, Stefan N. Hansen, Arad Kodesh, Helen Leonard, Stephen Z. Levine, Vera R. Mitter, Eric T. Parner, Annette K. Regan, Abraham Reichenberg, Sven Sandin, Auli Suominen, and Diana Schendel, Autism Research<\/em>, August 23, 2021 (online). Address: Gavin Pereira, School of Public Health, Curtin University, Perth, WA 6102, Australia, gavin.f.pereira@curtin.edu.au.<\/p>\n

\u2014and\u2014<\/p>\n

\u201cSibling\u2019s likelihood of autism diagnosis impacted by age gap,\u201d news release, Curtin University, August 25, 2021.<\/p>\n

This article originally appeared in Autism Research Review International, <\/em><\/a>Vol. 35, No. 4, 2021<\/em><\/p>\n<\/div>

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