The Autistic Journalist

Using words to explain the mind

Blame my absence on testosterone

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I’m sure plenty of you are wondering what happened to this site’s activity. To summarize, my schedule was eaten up by a swarm of Minnesota state tournament coverage, but I’ve now returned from my hiatus to continue informing you of autism’s role in the news. I appreciate the visits you’ve made in my three months away from The Autistic Journalist, which passed 10,000 hits during my pause. To thank you, I’ll pull out an article I had saved to discuss with you.

Two months ago, MSNBC reported a study suggesting testosterone could be a culprit in the higher prevalence of autism in males. A similar story was picked up by a CBS TV affiliate in Green Bay, but that story has since been removed. The study found testosterone lowers the ability for cells to express a particular gene known as RORA. That gene, when activated, can protect neurons from the effects of stress and inflammation, and both are elevated in autistic people. Conversely, estrogen raises RORA levels, which may protect females against autism even if RORA levels were otherwise low. An alternate theory is genes in the X chromosome, suggesting females have a “backup copy” since they carry two X chromosomes while males have one X and one Y chromosome. Despite the theory’s plausibility, no X chromosome genes have been associated with autism.

This doesn’t mean your boys will develop autism upon reaching puberty, when testosterone increases can be noticed. The story gives us a potential clue to autism’s cause, but genes and testosterone levels are simply a game of chance when cells are developing. The explanations provided in the story make sense, but more research will be needed to make an accurate conclusion to this hypothesis.

While the story doesn’t say much, people have been wondering why boys are more likely to receive an autism diagnosis than girls, and any step that brings an answer closer to a question may help ease the mind of concerned individuals.

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Written by TheSportsBrain

April 12, 2011 at 11:39 pm

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