What causes insufficient thyroxine production?

Insufficient thyroxine production, or hypothyroidism, can be caused by various factors, including autoimmune diseases like Hashimoto's thyroiditis, where the immune system attacks the thyroid gland. Other causes include iodine deficiency, certain medications, radiation therapy, and congenital disorders affecting thyroid development. Additionally, surgical removal of the thyroid gland can also lead to reduced thyroxine production. These conditions result in decreased hormone synthesis, leading to a range of metabolic issues in the body.