Effects of A2 Dairy Consumption in Celiac Adolescents

Evaluation of the Effects of Consumption of Milk and Dairy Products Containing A2 β-Casein on Nutritional Status, Quality of Life, and Certain Blood Parameters in Adolescents With Celiac Disease

The goal of this clinical trial is to evaluate the effect of A2 β-casein-containing milk and dairy product consumption on nutritional status, gastrointestinal symptoms, quality of life, sleep quality, and selected biochemical parameters in adolescents aged 10-18 years with celiac disease.

The main questions it aims to answer are:

• Does consumption of A2 β-casein-containing milk and dairy products improve gastrointestinal symptoms and quality of life in adolescents with celiac disease?
• Does consumption of A2 β-casein-containing milk and dairy products affect nutritional status, body composition, and biochemical parameters compared with standard milk and dairy products?

Researchers will compare adolescents consuming A2 β-casein-containing milk and dairy products with adolescents consuming standard milk and dairy products to see if A2 β-casein provides additional benefits.

Participants will:

• Consume the assigned milk and dairy products during the intervention period.
• Attend baseline and follow-up assessments.
• Complete dietary records and questionnaires related to gastrointestinal symptoms, sleep quality, and quality of life.
• Undergo anthropometric, body composition, hand grip strength, and biochemical assessments.

Inclusion Criteria:

• Adolescents aged 10-18 years
• Diagnosis of celiac disease according to ESPGHAN criteria
• Being diagnosed with celiac disease within the last 3 months
• Volunteering to participate in the study

Exclusion Criteria:

• Presence of any chronic disease other than celiac disease
• Presence of lactose intolerance
• Presence of cow's milk protein allergy