The first and second pregnancies do not get too close, can cause Autism Risk

About Chemistry: Autism is a condition of a person from birth or during infancy, which makes him unable to form social relationships or normal communication. As a result the child is isolated from other human beings and into the world of repetitive, obsessive activities and interests. (Baron-Cohen, 1993). According to Power (1989) characteristics of children with autism is a disorder in six areas:

    * Social interaction
    * Communication (language and speech)
    * Behavioral-emotional
    * Pattern play
    * Sensory and motor disturbances
    * Delayed or abnormal development.

These symptoms begin to appear from birth or during childhood, usually before the child is 3 years old.

Autism in the Diagnostic and Statistical Manual of Mental Disorder R-IV is one of five types of disorders under the umbrella of PDD (Pervasive Development Disorder) outside of ADHD (Attention Deficit Hyperactivity Disorder) and ADD (Attention Deficit Disorder).

The cause of autism has not yet been resolved. A new study says the time of birth play a role in autism. Proximity within a range of birth with the oldest siblings tend to be diagnosed with autism.

In an article in the journal Pediatrics, the second child was conceived within a year of birth of their older brothers, three times more likely to be diagnosed with autism than the brother who was conceived in more than three years after their brother was born.

Researchers see the records of babies born in California between 1992 and 2002 and examine the possibility of autism more than 660,000 children a second. They found, further pregnancy, tend to lower the risk of autism in children if the distance is more than three years.

Compared with children who are conceived more than three years after their oldest brother was born, the child who was conceived 12 months to 23 months after the previous birth, two times more likely to be diagnosed with autism and children conceived after 24 months to 35 months is one to one-quarter more likely to be diagnosed .

The author of this study did not know why the time of pregnancy and autism are linked, but they suggest some factors that may be to blame, although they did not test it. Some possible causes are low levels of nutrients such as folate and iron, and higher stress levels. Results are recorded low birth weight, premature birth, and age of parents, the article said.

This finding is very important because the number of babies born within two years of their siblings increased, rising from 11 percent in 1992 to 18 percent in 2002. (Various sources)