There is evidence to suggest that there is a link between siblings and autism. Researchers have found that siblings of children with autism are more likely to be diagnosed with the disorder than siblings of children without autism.

One study found that the risk of autism was approximately 18 times higher. Another study found that the risk of autism was about 9 times higher for siblings of children with autism.

Possible factors

There are several possible explanations for this increased risk among siblings. One possibility is that genetics may play a role in the development of autism, and siblings may share certain genetic risk factors for the disorder.

Another possibility is that siblings may be exposed to similar environmental factors that may increase their risk of developing autism. For example, siblings may share a common prenatal or postnatal environment that may contribute to the development of the disorder.

It is worth noting that while there is a higher risk of autism among brothers and sisters, it is still relatively rare for siblings of children with autism to be diagnosed with the disorder. Most siblings of children with autism do not go on to develop the disorder themselves.

It is also important to note that autism is a spectrum disorder, meaning that it can present itself in a wide range of symptoms and severity. Some people with autism may require significant support in their daily lives, while others may have milder symptoms and be able to live independently.

Overall, while there is evidence to suggest a link between siblings and autism, more research is needed to understand the complex interplay between genetics and other factors in the development of the disorder.

Advice on autism can be found throughout our site or sites such as the US Autism Association or the UK’s National Autism Society.