PT - JOURNAL ARTICLE AU - Lynne P. Heilbrun AU - Raymond F. Palmer AU - Carlos R. Jaen AU - Melissa D. Svoboda AU - Jimmy Perkins AU - Claudia S. Miller TI - Maternal Chemical and Drug Intolerances: Potential Risk Factors for Autism and Attention Deficit Hyperactivity Disorder (ADHD) AID - 10.3122/jabfm.2015.04.140192 DP - 2015 Jul 01 TA - The Journal of the American Board of Family Medicine PG - 461--470 VI - 28 IP - 4 4099 - http://www.jabfm.org/content/28/4/461.short 4100 - http://www.jabfm.org/content/28/4/461.full SO - J Am Board Fam Med2015 Jul 01; 28 AB - Purpose: The aim of this study was to assess whether chemically intolerant women are at greater risk for having a child with autism spectrum disorders (ASD) or attention deficit hyperactivity disorder (ADHD).Methods: We conducted a case–control study of chemical intolerance among mothers of children with ASD (n = 282) or ADHD (n = 258) and children without these disorders (n = 154). Mothers participated in an online survey consisting of a validated chemical intolerance screening instrument, the Quick Environmental Exposure and Sensitivity Inventory (QEESI). Cases and controls were characterized by parental report of a professional diagnosis. We used a one-way, unbalanced analysis of variance to compare means across the 3 groups.Results: Both mothers of children with ASD or ADHD had significantly higher mean chemical intolerance scores than did mothers of controls, and they were more likely to report adverse reactions to drugs. Chemically intolerant mothers were 3 times more likely (odds ratio, 3.01; 95% confidence interval, 1.50–6.02) to report having a child with autism or 2.3 times more likely (odds ratio, 2.3; 95% confidence interval, 1.12–5.04) to report a child with ADHD. Relative to controls, these mothers report their children are more prone to allergies (P < .02), have strong food preferences or cravings (P < .003), and have greater sensitivity to noxious odors (P < .04).Conclusion: These findings suggest a potential association between maternal chemical intolerance and a diagnosis of ADHD or ASD in their offspring.