There is no single cause for Autism Spectrum Disorders (ASD). The complexity of the disorder and the wide variety of symptoms suggest that there might be many factors that lead to ASD. Researchers continue to search for the exact causes of ASD, as they are still unknown as of now, but they have found that both genetics and environmental factors can play a role. For example, scientists have discovered that a few genes that are associated with brain development may be linked with ASD.
However, genetic problems are not always inherited and many times problems will occur due to random mutations. In addition to genetics, environmental factors such as parental age, demographics, exposure to toxins, or pregnancy/birth complications may also play a role.
While children of all races and nationalities can be affected by ASD, there are a few factors that can increase a child’s risk: