Diabetes and thyroid disease are both autoimmune disorders, and patients with one autoimmune disorder have a significant risk of developing a second. The presence of either diabetes or thyroid disease can predispose a patient to the presence of the other condition. Patients of any age can develop both diabetes and thyroid disease and the presence of both these conditions simultaneously is not uncommon.

Approximately 12% of patients with diabetes are also diagnosed with some type of thyroid disease. Hypothyroid disorders and postpartum thyroiditis are much more common than hyperthyroidism, though diabetic patients can have any type of thyroid disorder. Females are more likely than males to develop both diabetes and thyroid disease and people with type one diabetes are more likely to develop thyroid disease than people with type two diabetes. As many as 30% of young women with type one diabetes may be diagnosed with thyroid disease.

The risk of developing diabetes and thyroid disease increases as a person ages. Though thyroid problems are less likely in patients with type two, or adult onset, diabetes there is still a strong connection between the presence of this type of diabetes and thyroid disease. The overall instance of patients who have diabetes and who later develop thyroid disease is nearly twice that of the instance of thyroid disease in the general public.

The connection between diabetes and thyroid disease stems from the fact that both of these conditions are autoimmune disorders. In patients with these types of diseases, the immune system does not function normally and attacks organs or components of the patient’s body. In patients with diabetes, the immune system destroys the cells in the pancreas that produce insulin, while in thyroid disease, the immune system destroys the tissue of the thyroid gland. Patients with diabetes and thyroid disease are at risk of developing other autoimmune diseases as well.

A number of complications can develop in patients who have both disorders. The presence of thyroid disease can make it difficult for a person to regulate the level of insulin in the bloodstream. This can cause serious complications for diabetic patients. Medications are available to manage thyroid disease, and it is extremely important for patients with both diabetes and thyroid disease to keep these conditions in check.