Comments Subscribe to Personal Liberty News Feed Subscribe to Personal Liberty

Low Birth Weight Linked To Autism

EVANSTON, Ill., Jan. 20 (UPI) — Low birth weight is an important environmental factor contributing to the risk of autism spectrum disorder, U.S. researchers say.

“Our study of discordant twins — twin pairs in which only one twin was affected by autism spectrum disorder — found birth weight to be a very strong predictor of autism spectrum disorder,” lead author Molly Losh of Northwestern University said in a statement.

Prior studies showed when one identical twin had autism spectrum disorder, the other twin was much more likely to have autism spectrum disorder as well.

“Because identical twins share virtually 100 percent of their genes, this is strong evidence for the role of genetics in autism,” said Losh. “Yet it is not 100 percent the case that autism spectrum disorder affects both identical twins in a twin pair.”

When only one twin is affected by autism spectrum disorder in some identical twin pairs, this suggests environmental factors may play a role, either independently or in interaction with autism risk genes, Losh said.

“And because autism is a developmental disorder impacting brain development early on, it suggests that prenatal and perinatal environmental factors may be of particular importance,” she said.

The findings are published in the journal Psychological Medicine.

UPI - United Press International, Inc.

Since 1907, United Press International (UPI) has been a leading provider of critical information to media outlets, businesses, governments and researchers worldwide.

Facebook Conversations

Join the Discussion:
View Comments to “Low Birth Weight Linked To Autism”

Comment Policy: We encourage an open discussion with a wide range of viewpoints, even extreme ones, but we will not tolerate racism, profanity or slanderous comments toward the author(s) or comment participants. Make your case passionately, but civilly. Please don't stoop to name calling. We use filters for spam protection. If your comment does not appear, it is likely because it violates the above policy or contains links or language typical of spam. We reserve the right to remove comments at our discretion.

Is there news related to personal liberty happening in your area? Contact us at


Sign Up For Personal Liberty Digest™!

PL Badge

Welcome to,
America's #1 Source for Libertarian News!

To join our group of freedom-loving individuals and to get alerts as well as late-breaking conservative news from Personal Liberty Digest™...

Privacy PolicyYou can opt out at any time. We protect your information like a mother hen. We will not sell or rent your email address to anyone for any reason.