Autism researchers call for brain donations

New research published in the UK has found that autism is far more widespread than previously thought.

The finding comes as the world marks the UN-backed Autism Awareness Day.

Researchers hope the day will make people around the world consider donating their brains after death, as there is a desperate need for brain tissue to allow scientists to learn more about the origins of the disease.

Al Jazeera’s Simon McGregor-Wood reports from London.