Autism and ADHD run high in children of chemically intolerant mothers

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Autism and ADHD run high in children of chemically intolerant mothers

A new study from The University of Texas Health Science Center at San Antonio found that mothers with chemical intolerances are two to three times more likely than other women to have a child with autism spectrum disorder (ASD) or attention deficit hyperactivity disorder (ADHD).

The medical study was published in The Journal of the American Board of Family Medicine on July 8, 2015.

People who are chemically intolerant often have serious reactions to common chemicals and some become too sick carry out routine functions. Chemical intolerance affects about 10% to 30% of the U.S. population. Developmental disorders such as autism and attention-deficit disorder affect one in six children in the United States.

The study included 282 mothers of children who had ASD and 258 mothers of children diagnosed with ADHD. The control group consisted of 154 mothers whose children had no developmental disorders.

The study was based on maternal responses to the Quick Environmental Exposure and Sensitivity Inventory, or QEESI, a 50-question survey used by physicians worldwide to diagnose chemical intolerance.

“We are most concerned about how vulnerable the children with ADHD and autism were to environmental exposures,” said the primary author, Lynne P. Heilbrun, M.P.H., autism research coordinator for the Department of Family and Community Medicine at the UT Health Science Center San Antonio. “Mothers reported that their children were significantly more sensitive to everyday exposures such as engine exhaust, gasoline, smoke, fragrances and cleaners than their neurotypical peers.” The children reportedly also were more sensitive to adverse effects from infections, medications, chemicals, foods and allergens, the authors said.

The authors said chemically intolerant mothers were three times more likely to report having a child with ASD and 2.3 times more likely to have a child with ADHD. The study did not assess fathers.

Mothers in the study who had a child with ASD or ADHD reported that their children had more illnesses or symptoms associated with chemical intolerance than control mothers.

  • The children with ADHD were 1.7 times more likely than control children (ASD were 4.9 times more likely) to have had multiple infections requiring prolonged use of antibiotics.
  • Children with ADHD were twice as likely as control children (ASD were 1.6 times more likely) to have allergies.
  • Children with ADHD were twice as likely (ASD were 3.5 times more likely) to have had nausea, headaches, dizziness or trouble breathing when exposed to smoke, nail polish remover, engine exhaust, gasoline, air fresheners or cleaning agents than control children.
  • Children with ADHD were twice as likely as controls (ASD were 4.8 times more likely) to have strong food preferences or cravings for cheese, chips, bread, pasta, rice, sugar, salt and chocolate.

“The American College of Obstetrics and Gynecology issued a consensus statement in 2013 saying that there is sufficient evidence linking toxic exposures to adverse birth and developmental outcomes, calling for physicians to inform women to avoid specific environmental exposures even before conception. Studies that linked tobacco and alcohol to neurological disorders were available for decades before recommendations to avoid these became a major public health initiative. Physicians have the opportunity right now to become proactive in helping mothers protect their children from neurological disorders plaguing U.S. families,” Heilbrun said.

The authors recommend that all mothers and pregnant women adopt preventive measures to avoid potentially harmful chemicals. Preventive measures include avoiding exposure to pesticides, solvents, combustion products, and chemicals used during construction and remodeling.

(Source: UT Health Science Center, The Journal of the American Board of Family Medicine)

Date Created: August 11, 2015

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