Why Do People Develop Hypothyroidism?

Sep 11, 2025 Source: Cainiu Health
Dr. Yang Ziqi
Introduction
Hypothyroidism generally refers to thyroid dysfunction. Under normal circumstances, hypothyroidism may be caused by long-term iodine deficiency, age-related decline in thyroid function, Hashimoto's thyroiditis, thyroid surgery damage, pituitary tumor compression, or other factors. It is recommended to seek timely medical attention, identify the underlying cause, and undergo symptomatic treatment under the guidance of a physician.

  Hypothyroidism generally refers to hypothyroidism. Under normal circumstances, developing hypothyroidism may be caused by long-term iodine deficiency, age-related decline in thyroid function, Hashimoto's thyroiditis, thyroid surgical injury, pituitary tumor compression, and other reasons. It is recommended to seek timely medical consultation, clarify the cause, and undergo symptomatic treatment under a doctor's guidance. Detailed analysis is as follows:

  1. Long-term iodine deficiency: Iodine is an essential raw material for synthesizing thyroid hormones. If the daily diet consistently lacks iodine-rich foods such as iodized salt, kelp, and nori, it may lead to insufficient synthesis of thyroid hormones, causing hypothyroidism. Adjust the diet to ensure adequate intake of iodine-containing foods daily, and supplement with iodine agents under a doctor's guidance if necessary.

  2. Age-related thyroid function decline: With increasing age, thyroid tissue gradually ages, leading to reduced function and decreased thyroid hormone secretion, making hypothyroidism more likely. Regular thyroid function checks are recommended, with timely intervention upon detecting abnormalities. Maintaining regular作息 and moderate exercise can also help sustain stable body metabolism.

  3. Hashimoto's Thyroiditis: This is an autoimmune disease in which the immune system mistakenly attacks thyroid tissue, gradually impairing thyroid function and reducing hormone secretion. Patients may follow medical advice to use medications such as levothyroxine sodium tablets, thyroid tablets, and Yikang capsules to supplement thyroid hormones and regulate thyroid function.

  4. Thyroid surgical injury: Partial or total thyroidectomy due to conditions like thyroid nodules or goiter may reduce thyroid tissue, resulting in insufficient hormone secretion. Patients need to take medications such as levothyroxine sodium tablets, thyroid tablets, and levothyroxine sodium enteric-coated tablets long-term as directed by a doctor to maintain normal thyroid hormone levels.

  5. Pituitary tumor compression: A pituitary tumor can compress pituitary tissue, affecting the secretion of thyroid-stimulating hormone, which in turn prevents the thyroid from secreting hormones normally, leading to hypothyroidism. If necessary, transsphenoidal pituitary tumor resection may be performed to remove the tumor, restore normal pituitary function, and improve hormone secretion.

  In daily life, maintain a balanced diet, avoid excessive fatigue, keep warm, and minimize the impact of cold stimuli on thyroid function. Additionally, maintain a positive mindset and avoid long-term negative emotions such as anxiety and depression to help maintain stable thyroid function.

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