Which of the Five Thyroid Function Tests Determines Intelligence?
Disease description:
In the most recent prenatal checkup, thyroid function was tested. Among the five thyroid function tests, which one determines intelligence?
Doctor's answer (1)
Dr. Yang Chuanjia
The five thyroid function tests include thyroxine (T4), triiodothyronine (T3), thyroid-stimulating hormone (TSH), free T3, and free T4. These indicators collectively reflect the functional status of the thyroid gland.
It should be noted that no single item among the five thyroid function tests independently determines intelligence. Rather, it is the combined effects of these indicators, especially the levels of free thyroid hormones (free T4 and free T3) and thyroid-stimulating hormone (TSH), that significantly influence intellectual development.
When thyroid function is abnormal, such as in hypothyroidism, levels of free T4 and free T3 decrease while TSH levels increase. This condition may impair intellectual development. Therefore, maintaining thyroid hormone levels within the normal range is particularly important for populations such as pregnant women and adolescents to support healthy intellectual development.
Thus, regular thyroid function monitoring should be conducted among key populations, such as pregnant women and adolescents, with appropriate treatment measures taken as needed.
