One study revealed that the greater the risk of autism is influenced by the age and health of a mother. Pregnant women who take antidepressants will be more risk of having an autistic child.
Until now, the mystery of the cause of autism is unknown. Many experts say autism, the disease mostly occurs due to hereditary factors. However, a study conducted the Kennedy Krieger Institute in Baltimore said, something different.
In that study revealed a relationship between maternal health and the risk of babies being born with autism. Although this new research could not solve the mystery of the cause of autism, the results of this study enough to attract attention.
Dr. Gary Goldstein of the Kennedy Krieger Institute in Baltimore said that the condition during pregnancy is one of the triggers of autism, the presence of genetic susceptibility.
"We have identified many susceptibility genes. However, not all at risk of autism, "said Goldstein.
A recent study published in Archives of General Psychiatry recently using a rigorous method for diagnosing autism spectrum disorders, including direct observation in children.
Through California's health records, the author of Stanford University in Palo Alto, California, Dr Joacim Hallmayer, mentions, this is the largest study done first to obtain a large sample of autistic twins drawn from the general population.
Children with autism may have difficulty communicating and interacting socially. They may have poor eye contact and engage in repetitive behaviors, such as rocking or hand flapping.
The U.S. government estimates one in 100 children have autism disorder and one of 192 also had autism. Some researchers also revealed that autism occurs in children who are identical twins.
The researchers used DNA tests to determine who has the identical twins and fraternal relations. Therefore, identical twins come from one fertilized egg and have identical genetic. This study found a high end autistic disorder, namely 77 percent in pairs of identical male twins and 50 percent in female twins with autism.
This autism spectrum disorders also occur due to the high. As many as 31 percent for male twins and 36 percent for female twins. Other studies have found that 10 percent to 20 percent of younger children diagnosed with autism may have the disorder.
"We found so many pairs of fraternal twins, of which both twins have autism spectrum disorder is a key discovery that puts the spotlight on pregnancy as a time when environmental factors can have an impact for them," said Dr. John Constantino of Washington University School of Medicine in St. Louis is also involved in the study.
Factors causing this include stress, diet, infections, maternal age, and drugs. Another study published in the same journal suggests, the researchers found a higher risk of autism in children who are born to mothers who took antidepressants during the years before the birth, especially in the first three months of pregnancy.
"It's too early to advise pregnant women to avoid antidepressants. However, untreated depression can also harm the mother and baby, "said lead author Lisa Croen Autism Research Program at Kaiser Permanente, a large health maintenance organization in California.