At present, scientists are trying to find out the association between genetics and autism and many researchers are being conducted to prove this phenomenon. It has many complications because researchers believe that autism is caused with the involvement of multiple genes that mix together due to chromosomal crossover.

If a family already have a child with autism there are eight percent elevated chances that the next coming child will also develop autism.

Another school of thought was described by the researchers that emotional traumas can also cause autism, such as horrifying accident, neglected behavior or shocking experience early in life. Since, there was no solid proof about these factors, that is why researchers diverted there concentration from these factors.

Many children with autism have shown high mercury level in their blood when tested, which could be the cause of autism. Some scientists blame childhood vaccines for this high metal level. It has been proven that high mercury level in blood cause slow development, impaired language development and attention deficit disorder. The theory behind is, if metals can cause the neurological disorder these also may participate in autism development.

Still, there is no clear cause of the autism, only we can find are theories and ideas. But the good new is researchers have developed the techniques that can make the quality of life better of autistics. These include psychological, physical and occupational therapies which enable the patient to become a productive part of the society.