Associations between parental psychiatric disorders and autism spectrum disorder in the offspring.
Parental psychiatric history nudges offspring autism odds up a little; moms' history matters slightly more than dads'.
01Research in Context
What this study did
Chien et al. (2022) pulled health records for every child born in Taiwan across six years. They compared kids later diagnosed with autism to matched controls without autism.
For each child they checked whether mom or dad had any psychiatric diagnosis before the child was born. They counted everything from depression to schizophrenia.
What they found
Kids whose mothers had a psychiatric history were about 1.5 times more likely to receive an autism diagnosis. Kids whose fathers had a psychiatric history were about 1.1 times more likely.
The link was small but held up across the whole population. Any parental disorder counted, not just one specific illness.
How this fits with other research
Fairthorne et al. (2016) saw the same direction: moms with outpatient psychiatric contacts had double the odds of an ASD child. The new study widens the lens to dads and still finds a bump.
Fairthorne et al. (2016) also looked at timing. They showed that having a child with autism can trigger new psychiatric problems in moms after birth. That sounds opposite, but it isn't. The two studies ask different questions: one asks if parents' past illness raises autism risk; the other asks if child's autism raises parents' future illness.
Koegel et al. (2014) zoomed in on maternal PTSD and saw a two-to-three-times jump in autism likelihood. Chien et al. (2022) confirm that maternal mental health matters, but show the signal is smaller when you look across all diagnoses.
Why it matters
When you meet a new family, ask about mom's and dad's mental-health history. A small but real increase in autism risk gives you a reason to speed up screening and early intervention. Share the numbers with parents in plain language: the rise is modest and many children will still develop typically, but extra vigilance helps.
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02At a glance
03Original abstract
Whether parental psychiatric disorders are associated with autism spectrum disorder (ASD) in offspring has remained inconclusive. We examined the associations of parental psychiatric disorders with ASD in offspring. This population-based case-control study used Taiwan's National Health Insurance Research Database to identify a cohort of children born from 2004 to 2017 and their parents. A total of 24,279 children with ASD (diagnostic ICD-9-CM code: 299.x or ICD-10 code F84.x) and 97,715 matched controls were included. Parental psychiatric disorders, including depressive disorders, bipolar spectrum disorders, anxiety disorders, obsessive-compulsive disorder, schizophrenia, substance use disorders, autism spectrum disorder, attention-deficit hyperactivity disorder (ADHD), and adjustment disorders were identified. Conditional logistic regressions with covariate adjustment were performed. The results suggest that parental diagnosis with any of the psychiatric disorders is associated with ASD in offspring (adjusted odds ratio [AOR] = 1.45, 95%CI: 1.40-1.51 for mothers; and AOR = 1.12, 95%CI: 1.08-1.17 for fathers). ASD in offspring was associated with schizophrenia, depressive disorders, obsessive-compulsive disorder, adjustment disorders, ADHD and ASD in both parents. The relationship between parental psychiatric disorders and the timing of the child's birth and ASD diagnosis varied across the different psychiatric disorders. The present study provides supportive evidence that parental psychiatric disorders are associated with autistic children. Furthermore, because the associations between parental psychiatric disorders and the timing of child's birth and ASD diagnosis varied across psychiatric disorders, the observed relationships may be affected by both genetic and environmental factors. Future studies are needed to disentangle the potential influence of genetic and environmental factors on the observed associations.
Autism research : official journal of the International Society for Autism Research, 2022 · doi:10.1002/aur.2835