New Study Finds 1 in 10 Celiac Patients May Have Additional Autoimmune Disorders (+Video)

Celiac.com 04/27/2026 - Celiac disease is widely known as a condition triggered by eating gluten, but it is also a complex autoimmune disorder that can affect many parts of the body. A new study examined how often people with celiac disease also develop additional autoimmune conditions that affect hormone-producing glands. These combinations are grouped under what is known as autoimmune polyglandular syndromes.

The goal of this research was to better understand how common these overlapping conditions are and what they look like in real patients. By studying more than two hundred individuals diagnosed with celiac disease, researchers were able to uncover important patterns that may improve diagnosis and long-term care.

Understanding Autoimmune Polyglandular Syndromes

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Autoimmune polyglandular syndromes refer to situations where a person develops two or more autoimmune diseases that affect glands in the body, such as the thyroid, pancreas, or adrenal glands. These conditions can develop over time and vary widely from person to person.

There are several types of these syndromes, each defined by different combinations of diseases. Some are extremely rare and linked to genetic mutations, while others are more common and involve conditions like thyroid disease or type one diabetes. Understanding these groupings helps doctors identify patterns and manage patients more effectively.

How the Study Was Conducted

The researchers reviewed medical records from 243 people diagnosed with celiac disease in northwest China. Most participants were adults, and women made up the majority of the group. The study carefully examined each patient’s medical history to identify additional autoimmune diseases.

Blood tests were used to detect specific immune markers, and genetic testing was performed in certain cases to confirm rare conditions. The researchers then classified patients into different types of autoimmune polyglandular syndromes based on established medical criteria.

How Common Are These Conditions?

The study found that about 10 percent of people with celiac disease also had an autoimmune polyglandular syndrome. This is significantly higher than what is seen in the general population, suggesting a strong connection between celiac disease and other autoimmune conditions.

Among the different types, one form stood out as the most common. This type involved thyroid-related autoimmune diseases combined with celiac disease. Other types were much rarer, each affecting only a small number of patients in the study.

Overall, the findings show that people with celiac disease are at a higher risk of developing multiple autoimmune conditions, particularly those involving hormone-producing glands.

Common Health Issues Found in Patients

In addition to autoimmune gland disorders, many patients in the study had other health concerns. A large portion experienced digestive conditions such as chronic stomach inflammation. Others had bone-related issues like osteoporosis, or nutritional deficiencies such as low levels of vitamin D.

Vitamin D deficiency was especially common, affecting a significant number of patients. This may be linked to the damage celiac disease causes in the small intestine, which can interfere with nutrient absorption.

The study also found that some patients had infections that may influence immune system activity. These findings suggest that celiac disease can have wide-ranging effects beyond the digestive system.

Differences Between Patients With and Without Additional Autoimmune Conditions

The researchers compared patients who had celiac disease alone with those who also had autoimmune polyglandular syndromes. Interestingly, there were no major differences in age, gender, or body weight between the two groups.

However, some important differences did emerge. Patients with multiple autoimmune conditions were more likely to have underactive thyroid function. They were also more likely to experience anxiety and depression.

Another notable finding was that certain blood markers related to celiac disease were lower in patients with additional autoimmune conditions. This suggests that standard tests may not always reflect the full complexity of the disease.

Why These Conditions Occur Together

One of the key reasons these diseases often occur together is shared genetics. Many autoimmune conditions, including celiac disease, are linked to similar genetic patterns. These genetic traits influence how the immune system responds to the body’s own tissues.

In celiac disease, the immune system reacts to gluten and damages the lining of the small intestine. In other autoimmune conditions, the immune system targets glands such as the thyroid or pancreas. Because the underlying immune dysfunction is similar, it is not surprising that these conditions can develop in the same person.

Environmental factors, infections, and nutrient deficiencies may also play a role in triggering or worsening these conditions.

Mental Health and Quality of Life

An important aspect of the study was the link between multiple autoimmune conditions and mental health. Patients with both celiac disease and autoimmune polyglandular syndromes were more likely to report anxiety and depression.

This may be due to several factors, including the burden of managing multiple chronic illnesses, hormonal imbalances, and the physical symptoms associated with these conditions. These findings highlight the importance of addressing both physical and emotional health in patients with celiac disease.

Limitations of the Study

While the study provides valuable insights, it does have some limitations. It was conducted at a single medical center, which means the findings may not apply to all populations. In addition, the research relied on past medical records, so it could not track how diseases developed over time.

Despite these limitations, the study offers one of the most detailed looks at the relationship between celiac disease and autoimmune polyglandular syndromes to date.

Why This Matters for People with Celiac Disease

This study highlights an important message: celiac disease is not just a digestive condition. It is part of a broader pattern of immune system activity that can affect many parts of the body.

For people with celiac disease, this means that regular screening for other autoimmune conditions may be essential. Early detection can lead to better treatment and help prevent complications.

The findings also emphasize the need for a comprehensive approach to care. This includes monitoring nutrient levels, supporting mental health, and being aware of symptoms that may signal other autoimmune conditions.

Ultimately, this research could lead to better outcomes and improved quality of life for individuals living with celiac disease by encouraging earlier diagnosis and more personalized care strategies.

Read more at: frontiersin.org

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