Causes of Autism

Autism is a condition attributed to abnormal chemistry and biology in the brain. As a matter of fact actual causes of this disorder are unknown, however the abnormalities are under an active research. Probably there are several factors which can cause autism.

The most common causes are genetic factors. For instance, identical twins are more prone than siblings or fraternal twins to have autism. In fact, online pharmacy viagra language abnormalities are more frequent in relatives of children with autism. Nervous system problems and chromosomal abnormalities are common in families with cases of autism.

Several other causes can be suspected, but none of them has been proven:


Very often parents are concerned that certain vaccines may not be safe enough and can harm their child. They ask the doctor wait, or refuse to use the vaccine. But, this is important to consider the risk of not using the vaccination.

There are people who think that mercury (thimerosal) which is a preservative in vaccines can cause autism or ADHD. But this has NOT been proved by the studies.

The Institute of Medicine (IOM) and The American Academy of Pediatrics say that no vaccine or any of its ingredients can be responsible for children who have autism. And besides, these medical institutions conclude that obviously the advantages of vaccines outcome possible risks.

You can easily find all childhood vaccines in a single-dose form and they do not have added mercury in it.

According to the Center for Disease Control and Prevention the exact number of kids suffering from autism is unknown. The CDC reports that autism is now more common than it was thought before. But this does not necessarily mean that the illness rate has increased, this may as well be related to the ability to diagnose autism which is high nowadays.

Actually boys are 3 - 4 times more prone to autism than girls. The risk of autism does not depend on education, lifestyle or family income. Some specialists think that the increased rate of autism may be due to emerging of new definitions of the disease. In fact, now autism includes a larger number of symptoms and thus there are more cases when children are affected by autism. A child diagnosed with high-functioning autism nowadays might have been considered just as odd 30 years ago.

There is a number of pervasive developmental diseases which are listed below: