A new study out of Denmark is giving us a clearer picture of how genetics might play a role in autism risk.
By looking at cousins, the researchers are trying to tease apart whether certain maternal health issues affect kids directly through shared genes or more indirectly through the environment in the womb.
Direct vs. Indirect Genetic Effects
The study, led by Magdalena Janecka at NYU Langone Health, dug into health records from thousands of Danish children who’ve been diagnosed with autism.
The team focused on the mother’s health conditions before and during pregnancy, then compared autism rates between different types of cousins: parallel cousins (kids of maternal aunts) and cross cousins (kids of maternal uncles).
What they found was interesting. Conditions like epilepsy and certain personality disorders seemed linked to autism across all the cousins. That points to direct genetic factors that run in the family.
On the other hand, conditions like recurrent major depression, anxiety disorders, and certain pregnancy complications showed a much stronger link.
But only among parallel cousins. This makes it look like these effects are probably indirect. Basically, it points to shared genetics between sisters that influence the kind of prenatal environment they create for their babies.
Why This Research Actually Matters
For a long time, doctors and families have noticed links between things like maternal hypertension, infections during pregnancy, and later autism diagnoses.
But it’s been hard to tell if those conditions were truly causing the autism or if they were just part of a bigger genetic picture.
This cousin-comparison approach is pretty clever. It lets scientists explore these connections without needing expensive full-genome sequencing.
Family-based studies like this are proving really useful for sorting out the messy epidemiology of autism.
Supporting Families While the Science Moves Forward
Studies like these really show just how much we’re still figuring out about autism—the way genetics and environment work together isn’t all that clear yet. Still, families can’t wait for all the answers. They need support right now.
At Sacramento ABA Center, we keep up with the latest studies, but at the end of the day, what really counts is what helps the kids right now.
That’s why our ABA therapy feels personal and down-to-earth. We work with autistic children to strengthen their communication and social skills, tackle everyday routines, and build the confidence they need to move through life on their own terms.
Moving Forward with Hope
New research is constantly giving us clearer insights into autism, and that’s helping so many parents and caregivers feel a little less overwhelmed and a lot more hopeful.
The truth is, autism is complex. There’s no single cause or simple answer, but one thing we know for sure is that early, individualized support can make a world of difference for kids and their families.
If your family is walking this path and you’re looking for support you can really count on, we’re here at Sacramento ABA.
We create therapy plans that are truly tailored to your child, offer practical guidance for the whole family, and focus on what works best for your unique situation, never a one-size-fits-all approach.
Give us a call or reach out to schedule a consultation. We’d love to help however we can.
