Autism risk more strongly linked to genetics
![DNA](https://www.ausdoc.com.au/wp-content/uploads/2022/08/dna_dreamstime_m_141754548_july2019-2.jpg)
Most of the variation in risk for autism is explained by genetics rather than differences in environmental factors, like lifestyle or community characteristics or certain pregnancy outcomes, a study in five countries suggests.
Autism spectrum disorder has long been thought to involve inherited genetic traits, and previous research also suggests that some non-inherited traits and maternal characteristics may also play a role.