Study in Twins Finds a Shared Environment Influences the Development of Autism More Than Shared Genes
Reviewed by Louise Chang, MD
July 4, 2011 -- One of the largest studies of twins shows environment may play a larger role in the development of autism than previously recognized.
Several small studies conducted over the last three decades have found that it is much more common for identical twins to be diagnosed with autism than it is for fraternal twins.
That’s led to the belief that the lion’s share of the odds of developing autism is written into a person’s DNA, with a much smaller percentage coming from something in the environment.
The new study, which is published in the Archives of General Psychiatry, found that autism was surprisingly common in fraternal twins, despite the fact that they don’t share as many of the same genes as identical twins, suggesting that something in their mutual life circumstances may be playing at least as strong a role as genetics.
“There are lots of neuroscience papers that begin ‘Autism is one of the most heritable conditions in psychiatric genetics and shows over 90% heritability...’ and I don’t think people should start their papers that way anymore,” says Harold Hill Goldsmith, PhD, a professor of psychology at the University of Wisconsin at Madison.
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If you no someone on the Autism spectrum that might benefit from training karate training. Please contact me at 803-462-9425. I have worked with several children ranging in age from 8 to 14, including one boy who was non verbal and extremely severe. Most Autistic children benefit from getting exercise and focusing on core skills that require good self control and hand to eye coordination.
You are welcome to try a class for FREE!
Sensei Chris Feldt
Samurai Karate Studio
Columbia, SC 29229
803-462-9425
samuraikaratestudio@gmail.com
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