Thursday, July 18, 2019

Autism Mostly Caused By Genetics, Study Finds

In what’s being called the largest study of its kind, researchers say that the likelihood of developing autism is overwhelmingly rooted in a person’s genetic makeup.
Nearly 81 percent of autism risk is hereditary, according to findings published this week in the journal JAMA Psychiatry.
Heritability accounted for a varying level of risk across the countries studied, with a high of 87 percent in Israel compared to 51 percent in Finland.
Overall, however, the study found that the vast majority of autism risk was associated with genetics. Environmental factors “contributed minimally” and maternal effects such as the mother’s weight played a “nonexistent or minimal” role.