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The universal symbol for autism is a puzzle piece. It’s pretty symbolic if you think about it. There are a lot of pieces to the Autism puzzle - some we’re aware of and others that we aren’t. Another piece of the Autism puzzle has fallen into place after a study done by the University of California, Davis.

The study, published in the February issue of the Autism Research Journal took into account over 4.9 million children born in California in the 90’s.  Researchers found that the mother’s age when giving birth had a direct affect over the child’s risk of developing Autism. This is particularly true for women over the age of 40 as they are 50% more likely to give birth to an Autistic child than women who give birth at ages 25-29.

Additionally, for every 5 years maternal age, the risk of Autism is increased by 18%.  Some studies have indicated that a father’s age also had an effect on the statistics and risk. In this particular study, researches found that the father’s age had no effect on the Autism risk when the woman’s age was over 30. It isn’t until you combine a man over 40 and a woman under the age of thirty. For example, if a man over 40, and a woman under 25 conceive a child, the risk of Autism in that child is double that of a father between ages of 25-29 and a woman of the same age.

In the 90’s, the number of women who gave birth in California went up 300%. Autism cases sky rocketed by about 600%. This study shows the clear correlation of the age of women giving birth and the risk of the child developing Autism, but researchers and experts point out that these cases only account for 5% of the overall cases of Autism that exist.

Despite the seemingly small impact that this study has on the overall spectrum that is Autism, it’s very important to realize that Autism is a very complicated disorder to investigate. There are many “pieces” to the puzzle, and though this is only one small piece, it’s a collective amount of these small pieces that when put together, that make Autism more known, understood, and hopefully someday, cured.

People are diagnosed with autism at a variety of different ages. Autism diagnosis ranges from toddlers to teenagers to adults, Autism does not discriminate against the age of a person. This might not be the case when we switch focus and look at the parents’ ages. A study conducted between 1989 and 2002 of 7.5 million births in California found that the risk of a child developing Autism went up with the age of the parents.

A child’s risk of getting Autism went up 38% for each 10 year increase of a mother’s age between the ages of 20 and 40. There were also other factors taken into account including race, education, and the father’s age.

As a father’s age increased, the risk of the child developing autism went up 22% with each 10 year increase between the ages of 20 and 60.

Most believe that genetics plays a key role in the development of Autism. However, studies of parental age as a factor have mixed results. There are some studies, like the one in California, that show age may have an impact on the risk of developing Autism. Then, there are other studies that do not show any impact whatsoever. Still, there is no solid evidence that age plays a definitive role in determining the risk of a child developing autism.

Over the last 2 decades, there has been a significant spike in the number of autism cases. The reasons for this still have not been determined as there is no clear link. Though it’s just an observation, it’s not unfathomable that the overall trend of delaying pregnancy and childbirth could have something to do with the rise – and this would tie into the age speculation.

Even if the parents’ age is a factor, however, it would not have an overwhelming effect on the risk of autism development. Even in the California study, a large majority of older parents did not give birth to children who developed Autism. About 800 children born to women between ages 40-44 developed autism, while 150,000 did not. When this number is compared to the children born to mother’s aged 25-29, the risk was 84% higher.

Until there is solid evidence, there are no suggestions to give parents planning on having children.