2022年12月10日 · Hypothyroidism happens when the thyroid gland doesn't make enough thyroid hormone. This condition also is called underactive thyroid. Hypothyroidism may not cause noticeable symptoms in its early stages.

2022年12月10日 · If the results show that TSH is high and T-4 is low, then the diagnosis is hypothyroidism. In some cases, the thyroid hormone T-3 may be measured as well. If the second test shows high TSH but T-4 and T-3 are in the standard range, then the diagnosis is a condition called subclinical hypothyroidism.

2022年1月15日 · The main thyroid hormone is thyroxine (T-4). A low blood level of thyroxine (T-4) confirms the findings of a TSH test and indicates the problem is within the thyroid itself.

2019年7月18日 · Although the condition tends to be more common in someone in their 50s, 60s and 70s than early in life, Dr. Smallridge says that, for a small subset of adult women, pregnancy also can cause low levels of thyroid hormone, known as thyroxine or T4.

Hypothyroidism happens when the thyroid gland doesn't make enough thyroid hormone. This condition also is called underactive thyroid. Hypothyroidism may not cause noticeable symptoms in its early stages.

2024年3月19日 · It sounds as if you’ve already undergone this test of your thyroid-stimulating hormone (TSH). There is a myth that blood tests aren’t a reliable way to find thyroid disease, but this is not true. An abnormally high TSH will catch low thyroid function in about 95% of cases.

2019年9月11日 · "If someone has low levels of thyroid hormone, cholesterol level goes up. The cholesterol can then have an adverse effect on the heart and peripheral vascular system, and it can lead to an increased risk of heart disease and stroke ," says Dr. Smallridge.

2024年2月12日 · When thyroid hormone levels are too low, patients can develop conditions such as heart failure, high cholesterol, depression or weight gain. When thyroid hormone levels are too high, patients can develop atrial fibrillation, anxiety or osteoporosis.

2022年1月15日 · In Hashimoto's disease, immune-system cells lead to the death of the thyroid's hormone-producing cells. The disease usually results in a decline in hormone production (hypothyroidism). Although anyone can develop Hashimoto's disease, it's most common among middle-aged women.

2019年9月17日 · Hypothyroidism develops when the thyroid doesn't make enough hormones. As a result, your metabolism slows down. As thyroid activity slows, the level of T4 in your body decreases, and the level of TSH increases to encourage the thyroid gland to raise T4 production.