2006-10-23 06:40:08 · 7 answers · asked by frosty1018@sbcglobal.net 1 in Health ➔ Mental Health
Research indicates that genetic factors may play a part in causing autism in some individuals. Most researchers agree that autism probably results from many separate causes.
There is probably a genetic predisposition that is triggered by environmental factors. There is really no way to predict. Parents may have 5 children and only one is autistic, even though there is a family history. Parents with a family history may not have a child wiuth autism.
2006-10-23 06:49:08 · answer #1 · answered by Anonymous · 0⤊ 0⤋
can summarize much of what I discovered from a lecture by Geraldine Dawson, PhD.
Genetics play a huge factor in a child's likelihood to have autism, but it's not totally genetics. If one fraternal twin is autistic, the 2nd twin is no more likely to be autistic than siblings born at different times (about 6%). But if one identical twin is autistisc, the 2nd child is at least 10 times more likely to be autistic than siblings born at different times (about 60-80%.) If genes were the sole cause of autism, the identical twin of an autistic child would ALWAYS be autistic. So it appears, at least in 20% of the cases, there are both intrinsic AND extrinsic factors, combined.
But, inspite of anecdotal stories, at least some of the children with autism, developed autism BEFORE 18 months, when the vaccinations take place. There was a study using home old videos taken at first birthday parties & they were able to identify 90% of the kids with autism. If at 12 months, they were already displaying autistic behaviors, the vaccinations couldn't have caused them. That does not rule out the possibility that as much as 10% of the autistic children "get it" from the vaccinations.
Later, a larger study compared first birthday videos to 2nd birthday videos. 20% showed signs of regression.
2006-10-24 16:21:51 · answer #2 · answered by Smart Kat 7 · 0⤊ 0⤋
Autism is still being researched, but there is believed to be a genetic aspect to it.
Families with previous history of autism/spectrum disorders have a higher chance of having children with autism.
Researchers feel there may be other aspects as well.
There seems to be a link to difficult pregnancy/birth.
There was concern over whether vaccines were involved, but Scientist now think they aren't. The emergence of syptoms appear about the same time as most kids get their vaccines.
2006-10-23 06:47:03 · answer #3 · answered by yardchicken2 4 · 0⤊ 0⤋
most likely there's a genetic predispostion to it. Identical twins have a probability of concurrance of around 70-90%, which is all but proof that there is a significant genetic component.
There's about a thousand REALLY BAD studies of causes of autism out there, people claiming everything from TV to vaccines cause autism, don't believe those.
2006-10-23 06:44:23 · answer #4 · answered by banzai 4 · 0⤊ 0⤋
i believe it is. My 9 year old cousin has it and i have mild asd plus my grandmother may have had it. My mum tthought it ran on my fathers side but if three people on my mums side had or have got it it must be on her side. Apparently it runs on the mothers side. I fully agree with her
2015-01-30 17:16:48 · answer #5 · answered by Hannah 7 · 0⤊ 0⤋
There are people that believe so, although I don't think that there has been any definitive proof there is anecdotal evidence that it can run in families.
2006-10-23 06:59:33 · answer #6 · answered by Jez 5 · 0⤊ 0⤋
no one knows.
2006-10-23 06:42:28 · answer #7 · answered by allkell 2 · 0⤊ 0⤋