" About 81 percent of autism risk comes from inherited genetic factors, according to an analysis of more than 2 million children from five countries, published today in JAMA Psychiatry1.
The study is the largest yet to estimate the heritability of autism risk in a multinational population. The findings are consistent with results from a large 2017 study of twin and non-twin sibling pairs in Sweden that suggested about 83 percent of autism risk is inherited2. A third study — also in Sweden and also in twins — reported in 2010 that these factors contribute to about 80 percent of autism risk3."
Another nail in the coffin for the anti-vaxxer crowd, not that they will listen.
The genes themselves are not the only risk factor however, it looks like epigentic triggers brought on by conditions in-vitro (ie the pregnant mother having a fever) still contribute, as does the age of the father and mother at conception.
I do how long it will be before it starts getting genetically screened out, and what the ramifications might be culturally.
Plenty of historical figures are thought/known to have had the condition, and they wouldn’t have been who they were without it. And I doubt the autistic/aspie community would appreciate their slow dissappearance.
On the flipside it can be a hard condition to live with, for example there’s a far far higher prevalence of gender dysphoria amongst autistics.
If I were a parent faced with the decision of vaccinating my kid, but with the chance that it could cause autism (let’s assume it were proven that vaccination contributes to the chance of autism for the sake of argument), I would rather face the chance he develops autism than face the chance that he could die from one of the diseases the vaccinations would prevent.
On the science side of things, we’ve already shown no link between vaccines and autism. I think this study is more for those who say “if not vaccines, then what is causing autism?” They don’t just want proof vaccines don’t cause autism, they also want to know what does.
Noticed any relation to ADHD? I was diagnosed years back (inattentive), and I understand that autism and ADHD are often considered cousins despite being very different, but never really dived into the links.