ADHD Symptoms Celiac Disease or Gluten Sensitivity With ADHD By Jane Anderson Jane Anderson Facebook Twitter Jane Anderson is a medical journalist and an expert in celiac disease, gluten sensitivity, and the gluten-free diet. Learn about our editorial process Updated on January 17, 2021 Medically reviewed Verywell Mind articles are reviewed by board-certified physicians and mental healthcare professionals. Medical Reviewers confirm the content is thorough and accurate, reflecting the latest evidence-based research. Content is reviewed before publication and upon substantial updates. Learn more. by Steven Gans, MD Medically reviewed by Steven Gans, MD Steven Gans, MD is board-certified in psychiatry and is an active supervisor, teacher, and mentor at Massachusetts General Hospital. Learn about our Medical Review Board Print lolaira / Getty Images Parents have said for years that diet appears to play a role in their children's symptoms of ADHD, and many have removed food dyes and additives, along with sugar, from their children's plates in an effort to manage the condition. However, recent research is pointing to a new potential culprit for ADHD symptoms: gluten. When you have attention deficit hyperactivity disorder (ADHD), you often behave impulsively and are easily distracted, and you probably have difficulty concentrating and focusing on important tasks. These problems can take a toll on everyday life — if you're a child with ADHD, your grades probably suffer, and if you're an adult, you may find it difficult to perform well at work or sustain a healthy relationship. Sometimes estimates are that 5% of preschoolers and school-age children suffer from ADHD. For many of them, symptoms will continue into adulthood. It's not completely clear what causes ADHD; researchers believe it may involve a chemical imbalance in the brain or possibly even physical differences in brain structure. It is clear that it runs in families: If you have a close relative with ADHD, your chances of developing it yourself are around five times greater than the regular population. Celiac Disease and ADHD Linked in Studies The evidence for an association between ADHD and celiac disease is fairly strong: children and adults with celiac disease do seem to have a higher risk of ADHD than the general population. In one study, researchers tested 67 people with ADHD for celiac disease. Study participants ranged in age from 7 to 42. A total of 15% tested positive for celiac disease. That's far higher than the incidence of celiac in the general population, which is about 1%. Once they started on a gluten-free diet, the patients or their parents reported significant improvements in their behavior and functioning, and these improvements were backed up by ratings on a checklist physicians use to monitor the severity of ADHD symptoms. Another study investigated the incidence of ADHD symptoms in people newly diagnosed with celiac disease. It looked at 132 participants, ranging from toddlers to adults, and reported that "ADHD symptomatology is markedly overrepresented among untreated celiac disease patients." Again, a gluten-free diet improved symptoms quickly and substantially—six months after starting the diet, most people had vastly improved ADHD symptoms. Not all studies have found a link between celiac and ADHD. A 2013 study from Turkey, for example, found similar rates of celiac disease in children ages 5 to 15 with ADHD, and in control subjects. Evidence Less Clear for ADHD and Gluten Sensitivity Not everyone who has a problem with gluten has celiac disease—recent research has identified markers for non-celiac gluten sensitivity, a poorly understood condition that seems to involve a reaction to gluten but not the intestinal damage that characterizes the celiac disease. Gluten sensitivity may affect up to 8% of the population by some estimates. For people with gluten sensitivity, studies show it's possible that gluten plays a role in ADHD symptoms, but it's less clear how large a role it plays. In one large study, researchers looked at the effects of the gluten-free, casein-free (GFCF) diet on people with various autism spectrum disorders. They reported a statistically significant impact on certain symptoms including attention and hyperactivity but noted that they couldn't say for certain that it came from the GFCF diet. They also couldn't say if the effect might have stemmed from removing gluten or from removing casein from the participants' diets. Anecdotally, parents of children with ADHD have reported improvements in behavior (some quite significant) when they placed their children on special diets, including a gluten-free diet. However, it's difficult to definitely correlate those improvements with the dietary changes. Currently, there's no accepted test to detect gluten sensitivity; the only way to know if you have it is if your symptoms (which usually involve digestive problems but also can involve neurological issues such as headaches and brain fog) clear up when you go gluten-free. The Bottom Line If you suspect gluten may be contributing to your or your child's ADHD symptoms, what should you do? First, you should consider testing for celiac disease, especially if you or your child shows other celiac-related symptoms. Remember, not all symptoms involve your digestive system; celiac symptoms in children may involve something more subtle, such as short stature or failure to thrive. In most cases, your physician will use a blood test to screen for celiac disease, followed by endoscopy if the blood test is positive. If the tests are negative for celiac disease (or if you decide not to pursue testing), you may want to discuss dropping gluten from your diet or your child's diet for a month or so to see if symptoms improve. To do this test properly, you'll need to avoid gluten completely, not just cut back on it. If the symptoms are influenced by gluten ingestion, you should notice a change within that month. Impact of Diet on ADHD Sources Verywell Mind uses only high-quality sources, including peer-reviewed studies, to support the facts within our articles. Read our editorial process to learn more about how we fact-check and keep our content accurate, reliable, and trustworthy. Gluten-free for ADHD? Check the Research. ADHD Weekly. Children and Adults with Attention-Deficit/Hyperactivity Disorder (CHADD). May 4, 2017. Beaudoin M, Zimbardo P. A medical issue affecting the diagnosis of mood, attention and autistic disorders: a closer look at celiac disease and gluten sensitivity. Health Psychol Rev. 2012;6(2):222-240. doi:10.1080/17437199.2010.545514 Ertürk E, Wouters S, Imeraj L, Lampo A. Association of ADHD and Celiac Disease. J Atten Disord. 2016:108705471561149. doi:10.1177/1087054715611493 Güngör S, Celiloğlu OS, Ozcan OO, Raif SG, Selimoğlu MA. Frequency of celiac disease in attention-deficit/hyperactivity disorder. J Pediatr Gastroenterol Nutr. 2013;56(2):211-4. doi:10.1097/MPG.0b013e318272b7bc Kumperscak HG, Rebec ZK, Sobocan S, Fras VT, Dolinsek J. Prevalence of Celiac Disease Is Not Increased in ADHD Sample. J Atten Disord. 2016:10.1177/1087054716666953. doi:10.1177/1087054716666953 Niederhofer H. Association of attention-deficit/hyperactivity disorder and celiac disease: a brief report. Prim Care Companion CNS Disord. 2011;13(3). doi:10.4088/PCC.10br01104 Whiteley P, Haracopos D, Knivsberg A et al. The ScanBrit randomised, controlled, single-blind study of a gluten- and casein-free dietary intervention for children with autism spectrum disorders. Nutr Neurosci. 2010;13(2):87-100. doi:10.1179/147683010x12611460763922 By Jane Anderson Jane Anderson is a medical journalist and an expert in celiac disease, gluten sensitivity, and the gluten-free diet. See Our Editorial Process Meet Our Review Board Share Feedback Was this page helpful? Thanks for your feedback! What is your feedback? Other Helpful Report an Error Submit Speak to a Therapist for ADHD Advertiser Disclosure × The offers that appear in this table are from partnerships from which Verywell Mind receives compensation.