Childhood Tonsil Surgery Linked to Higher Autoimmune Disease Risk, Including Type 1 Diabetes

Researchers in South Korea examined health records of nearly 420,000 children who received medical care for tonsil or adenoid problems between 2007 and 2008. About one-quarter of these children had surgery to remove their tonsils and/or adenoids, while the rest did not. The team followed both groups for an average of 15.5 years to see who developed autoimmune diseases.

Children who had surgery developed autoimmune diseases at higher rates than those who did not. In the surgery group, 86.5 cases per 100,000 person-years were diagnosed with autoimmune disease, compared to 65.3 cases in the non-surgery group. For Type 1 diabetes specifically, children who had surgery were 34% more likely to develop the condition.

The surgery was associated with increased risk across multiple autoimmune diseases. Type 1 diabetes showed a 34% higher risk. Hashimoto's thyroiditis and Graves' disease (both thyroid conditions) showed a 38–39% higher risk. The study also found elevated risks for systemic lupus erythematosus, ankylosing spondylitis, and juvenile idiopathic arthritis.

The strength of these associations varied, but all were statistically significant, meaning they were unlikely to have occurred by chance alone.

Tonsils and adenoids are lymphoid tissues that play active roles in immune system development, especially in young children. They help the body recognize and respond to infections. Removing them early may alter how the immune system develops and matures during critical childhood years.

The study suggests that this early surgical intervention might increase the likelihood that the immune system later misidentifies the body's own cells as threats—a core feature of autoimmune disease. However, this study observed an association, not a proven cause-and-effect relationship.

This research shows a link between tonsil or adenoid surgery and later autoimmune disease, but it does not prove that surgery directly causes autoimmune disease. Other factors—such as genetic predisposition, infections during childhood, or the original reason for the surgery—may also play a role.

The findings do not mean that all children who have tonsil or adenoid surgery will develop autoimmune disease. Many children who undergo these procedures do not develop these conditions. Parents and families with questions about surgical recommendations should discuss individual risks and benefits with their healthcare team.

Source: Frontiers in medicine. Evidence type: PubMed indexed literature. Type1Cure is an information and intelligence hub, not a medical advice service. This article summarizes published research and does not provide diagnosis, treatment, or personal medical guidance. Always talk to your own care team before changing anything about your Type 1 diabetes management.