What are the causes of mild subclinical hypothyroidism?

Subclinical hypothyroidism usually refers to subclinical hypothyroidism. Generally speaking, main causes of mild subclinical hypothyroidism include aging, abnormal iodine intake, medication effects, Hashimoto's thyroiditis, and postoperative complications of thyroid surgery. If discomfort symptoms occur, it is recommended to seek timely treatment at a reputable hospital. Detailed analysis is as follows:

1. Aging

With aging, thyroid function may gradually decline, and thyroid hormone secretion may slightly decrease, leading to mild subclinical hypothyroidism. A balanced diet should be maintained in daily life, with appropriate intake of iodine-rich foods such as kelp and nori, and regular monitoring of thyroid function.

2. Abnormal Iodine Intake

Long-term iodine deficiency or excess can affect thyroid hormone synthesis, causing mild thyroid dysfunction and resulting in mild subclinical hypothyroidism. The iodine intake in the diet should be adjusted; iodine-deficient individuals can consume iodized salt, while those with iodine excess should reduce consumption of high-iodine foods.

3. Medication Effects

Long-term use of medications such as amiodarone tablets, lithium tablets, and methimazole tablets may interfere with thyroid function, leading to mild subclinical hypothyroidism. If caused by medication, the drug regimen or dosage should be adjusted after evaluation by a physician.

4. Hashimoto's Thyroiditis

This is an autoimmune disease that gradually damages thyroid tissue, which may initially manifest as mild subclinical hypothyroidism. Under a physician's guidance, levothyroxine sodium tablets, selenium yeast tablets, vitamin D drops, and other medications may be used to regulate immune function and improve thyroid status.

5. Postoperative Complications of Thyroid Surgery

After partial thyroidectomy, the function of the remaining thyroid tissue may slightly decline, leading to insufficient hormone secretion and causing mild subclinical hypothyroidism. Regular follow-up examinations are needed after surgery, and thyroid hormone supplementation may be required under a physician's guidance when necessary.

In daily life, it is important to maintain a regular routine and avoid excessive fatigue; keep emotions stable and reduce mental stress; engage in appropriate physical exercise to enhance physical fitness; and undergo regular thyroid function examinations to detect and intervene in abnormalities promptly.