High testosterone exposure in womb ‘ups risk of autism’
Melbourne: A new study has found that high testosterone exposure in the womb increases the risk of autism in children.
Researchers at Fiona Stanley`s Telethon Institute for Child Health Research found that girls with autistic-like behaviours at age two had their first period about six months later than girls without the disorder`s symptoms.
The study looked at 383 girls who had no diagnosis of autism. At age two they were each given a rating for showing autistic-like behaviours such as avoiding looking people in the eye.
"These findings indicate that exposure to testosterone in the womb may be regulating both autism-like behaviours and the age of first period and that this may play a role in clinical autism," The Australian quoted lead researcher Andrew Whitehouse as saying.
Whitehouse added that the results were linked to the so-called "male brain theory" of autism, which suggests the behaviour disorder is an extreme form of male mental traits.
"Autism is a real male-dominated condition; it affects around four males to one female, but there are also characteristics of people with autism that are more male-like," he said.
"People have started thinking what might cause that, and the obvious candidate is male-type hormones and the most biologically active is testosterone."
Whitehouse’s team now plans to conduct a world-first study to further examine the link.
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