Autoimmune Diseases:
The main cause of this is when the body’s immune system mistakenly attacks the thyroid gland.
Hashimoto’s Thyroiditis: This causes hypothyroidism.
Graves’ disease: This causes hyperthyroidism.
Iodine deficiency/excess: If the diet is too low in iodine (which is rare), or if iodine-containing medications are used excessively, thyroid function can be affected.
Genetics: People with a family history of thyroid problems are more likely to develop this disease.
Hormonal changes: Changes in thyroid function can occur in women during pregnancy or after childbirth.
Thyroid Nodules: Small tumors that form in the thyroid gland can cause excessive hormone production.
Medication side effects: Some medications taken for other conditions can affect thyroid function.
Radiation treatment: Radiation treatment for cancer or other conditions around the neck can harm the thyroid gland.
