Hashimoto thyroiditis is strongly associated with antibodies to which substances?

Hashimoto thyroiditis is strongly associated with antibodies to which substances?

• A. Gastrin and intrinsic factor
• B. Thyroglobulin antibodies only
• C. Thyroid peroxidase antibodies and thyroglobulin antibodies
• D. Insulin and GAD antibodies

Answer: (C)

Hashimoto thyroiditis is an autoimmune thyroid disease driven by antibodies against thyroid components. The strongest and most characteristic antibodies are those targeting thyroid peroxidase and thyroglobulin. Thyroid peroxidase antibodies are the most common and sensitive marker in this condition, often present in many patients, while thyroglobulin antibodies are also frequently found. Their presence reflects immune-mediated destruction of thyroid tissue, which over time leads to hypothyroidism. Antibodies to gastrin and intrinsic factor are associated with autoimmune gastritis and pernicious anemia, not Hashimoto. Antibodies to insulin and GAD are linked to type 1 diabetes, not primarily thyroid disease. Therefore, the substances most strongly associated with Hashimoto thyroiditis are thyroid peroxidase and thyroglobulin antibodies.

Hashimoto thyroiditis is an autoimmune thyroid disease driven by antibodies against thyroid components. The strongest and most characteristic antibodies are those targeting thyroid peroxidase and thyroglobulin. Thyroid peroxidase antibodies are the most common and sensitive marker in this condition, often present in many patients, while thyroglobulin antibodies are also frequently found. Their presence reflects immune-mediated destruction of thyroid tissue, which over time leads to hypothyroidism.

Antibodies to gastrin and intrinsic factor are associated with autoimmune gastritis and pernicious anemia, not Hashimoto. Antibodies to insulin and GAD are linked to type 1 diabetes, not primarily thyroid disease. Therefore, the substances most strongly associated with Hashimoto thyroiditis are thyroid peroxidase and thyroglobulin antibodies.