A high TSH level typically indicates hypothyroidism, meaning your thyroid gland isn't producing enough thyroid hormone. This is also known as an underactive thyroid.
Understanding TSH and Hypothyroidism
TSH, or thyroid-stimulating hormone, is produced by the pituitary gland. It signals your thyroid to release hormones that regulate your metabolism. When your thyroid isn't functioning optimally, your pituitary gland tries to compensate by producing more TSH. This results in elevated TSH levels detected in a blood test.
Several sources confirm this:
- Cleveland Clinic: A high TSH level usually indicates an underactive thyroid (hypothyroidism). https://my.clevelandclinic.org/health/articles/23524-thyroid-stimulating-hormone-tsh-levels
- UCLA Health: A high TSH level indicates the thyroid gland isn't making enough thyroid hormone (primary hypothyroidism). https://www.uclahealth.org/medical-services/surgery/endocrine-surgery/conditions-treated/thyroid/normal-thyroid-hormone-levels
- American Thyroid Association: A high TSH level indicates the thyroid gland isn't producing enough thyroid hormone (primary hypothyroidism). https://www.thyroid.org/thyroid-function-tests/
- Mayo Clinic: A high TSH level, coupled with a low T4 (another thyroid hormone), confirms hypothyroidism. https://www.mayoclinic.org/diseases-conditions/hypothyroidism/diagnosis-treatment/drc-20350289
Symptoms of High TSH (Hypothyroidism)
While a high TSH alone doesn't diagnose the condition, it often presents alongside symptoms like:
- Fatigue
- Weight gain
- Constipation
- Dry skin
- Intolerance to cold
- Depression
- Muscle weakness
- Slow heart rate
It's crucial to consult a doctor for diagnosis and treatment.
