Research on Celiac Disease in Children and Adolescents

Understanding Celiac Disease

Recent research has focused on the dietary habits of children and adolescents with celiac disease (CD) to identify factors leading to non-adherence to a gluten-free diet. Celiac disease is the most prevalent genetically related food intolerance, characterized as an autoimmune disorder where the body reacts to gluten—a water-insoluble protein primarily found in wheat, barley, and rye. In genetically predisposed individuals, gluten consumption triggers an immune response that damages the small intestine, impairing nutrient absorption and causing enteropathy, which is inflammation of the intestinal mucosa.

Celiac disease affects about 1% of the global population and presents various symptoms, including diarrhea, abdominal pain, bloating, flatulence, and constipation. Beyond intestinal symptoms, celiac disease can manifest extra-intestinally, leading to conditions such as anemia, stunted growth in children, weight loss, fatigue, epilepsy, osteoporosis, arthritis, infertility, and dental enamel defects.

Diagnosis of Celiac Disease

Diagnosis typically relies on a combination of clinical symptoms, serological tests, intestinal biopsy, and the patient’s response to a gluten-free diet. Tissue transglutaminase is the associated autoantigen, and the presence of anti-tissue transglutaminase antibodies and anti-endomysial antibodies (EMAs) aids in diagnosis. Genetic susceptibility is linked to haplotype variations in the human leukocyte antigen (HLA).

Treating Celiac Disease with a Gluten-Free Diet

Challenges of Dietary Adherence

The only effective treatment for celiac disease is strictly adhering to a gluten-free diet. However, compliance is particularly challenging for children and adolescents due to social, cultural, and economic pressures. Previous studies have highlighted that inadequate information and education about the disease, combined with the limited availability and high cost of gluten-free products, further complicate adherence.

Monitoring Pediatric Patients

Children with celiac disease often struggle more than adults to maintain a gluten-free diet. Regular follow-ups are crucial in managing their health. Monitoring dietary compliance, evaluating signs and symptoms, and analyzing biochemical and serologic markers can aid in the effective management of these patients.

Recent Study Findings

Study Overview

A recent cross-sectional and retrospective study published in BMC Gastroenterology analyzed patients under 20 years old to understand the rate and determinants of non-adherence to a gluten-free diet. Conducted at a pediatric gastroenterology outpatient clinic in Sao Paulo, Brazil, the study evaluated dietary habits and nutritional status from November 2011 to February 2012.

Thirty-five participants completed a questionnaire assessing their social life, awareness, adherence challenges, and dietary routines at home, school, social events, and during travel. Researchers also reviewed past medical records to gather information on associated diseases, laboratory test results, and anthropometric measurements, including weight, height, and body mass index (BMI).

Health and Nutritional Outcomes

Remarkably, 91.4% of patients or their families reported being in good to excellent health compared to peers without celiac disease. Adhering to a gluten-free diet positively impacted their health and well-being. Nearly half of the participants had additional health conditions, with type 1 diabetes being the most prevalent.

Approximately 20% reported not strictly following a gluten-free diet, citing reasons such as high costs, unappealing taste, and lack of options. Socializing and voluntary non-compliance also contributed to dietary transgressions. Many patients experienced symptoms like diarrhea and abdominal pain after veering from the diet.

The study assessed the nutritional progress of 27 patients post-treatment. Results showed significant improvements in weight and height among children who were underweight or had height deficits at diagnosis, along with an increased proportion of overweight patients during follow-up.

Most participants found the gluten-free diet manageable and recognized the need for lifelong adherence. Nonetheless, challenges persist, leading to undesirable symptoms from dietary lapses. Continuous education for patients, families, and schools is essential to support lifelong compliance.

Conclusion: The Need for Education and Early Diagnosis

Celiac disease remains a lifelong condition without a cure, and avoiding gluten is critical for treatment and preventing complications. This research underscores the importance of addressing factors such as high costs, limited availability, and poor palatability of gluten-free diets that hinder adherence. Patients who strictly follow the diet can overcome nutritional deficits and improve growth. The study highlights the necessity for early diagnosis and ongoing education to enhance adherence to a gluten-free diet and improve the quality of life for pediatric celiac disease patients.

Written by Preeti Paul, MS Biochemistry
Reference: Maraci Rodrigues et al., Rate and determinants of non-adherence to a gluten-free diet and nutritional status assessment in children and adolescents with celiac disease in a tertiary Brazilian referral center: a cross-sectional and retrospective study. BMC Gastroenterology (2018) 18:15 DOI 10.1186/s12876-018-0740-z