Autism spectrum disorder risk factors and autistic traits in gender dysphoric children.
High birth weight flags stronger autistic traits in gender-dysphoric children.
01Research in Context
What this study did
Kocher et al. (2015) looked at 49 gender-dysphoric children.
They asked: does birth weight link to autistic traits in these kids?
Doctors weighed the babies at birth and later gave parents autism-trait checklists.
What they found
Babies who were born heavy scored higher on autistic traits later.
The same heavy-birth-weight pattern showed up for gender nonconformity too.
One early body signal may sit under both autism and gender-dysphoria features.
How this fits with other research
Li et al. (2016) pooled five studies and saw mom’s obesity raises autism odds 47%.
Chezan et al. (2019) and Smit et al. (2019) found the same link using mom’s BMI instead of baby weight.
McConkey et al. (2010) seems to disagree: they saw low birth weight, not high, tied to autism.
The gap is timing: R et al. looked at very low weight and sick babies, while P et al. studied heavy but healthy newborns.
Together the papers say both ends of the weight curve deserve watching.
Why it matters
When you see a child with gender dysphoria, ask about birth weight.
If the chart shows a high neonatal weight, plan extra autism screening and social-skills teaching.
The same tip works in reverse: heavy-birth-weight kids on your caseload may benefit from gender-identity support questions.
One quick chart review can guide your whole assessment path.
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02At a glance
03Original abstract
Gender dysphoria (GD) and autism spectrum disorder (ASD) are associated. In 49 GD children (40 natal males), we examined ASD risk factors (i.e., birth weight, parental age, sibling sex ratio) in relation to autistic traits. Data were gathered on autistic traits, birth weight, parents' ages at birth, sibling sex ratio, gender nonconformity, age, maternal depression, general behavioral and emotional problems, and IQ. High birth weight was associated with both high gender nonconformity and autistic traits among GD children. Developmental processes associated with high birth weight are, therefore, likely to underlie the GD-ASD link either directly or indirectly. The present study is the first to provide quantitative data bearing on possible mechanisms that lead GD and ASD to co-occur.
Journal of autism and developmental disorders, 2015 · doi:10.1007/s10803-014-2331-3