Explain its etiology

Hypothyroidism, or underactive thyroid, can result from various etiological factors. The primary causes include:

1. Autoimmune Thyroiditis (Hashimoto's Disease):

   • This is the most common cause, where the body's immune system mistakenly attacks thyroid tissue, leading to inflammation and impaired hormone production.

2. Iodine Deficiency:

   • Iodine is essential for thyroid hormone synthesis. Inadequate dietary iodine can lead to hypothyroidism. This is ____ _________ ___ _____ ___ _________ ______ ___ _____ _________.
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