Sofia Vergara is advocating for increased awareness of the thyroid-stimulating hormone (TSH) test, a blood test used to screen for thyroid dysfunction. As a thyroid cancer survivor, the actor has partnered with health organizations to encourage patients to discuss their thyroid health with a physician, particularly if they experience unexplained fatigue, weight changes, or mood shifts.
What is the TSH test?
The TSH test measures the amount of thyroid-stimulating hormone in the blood. Produced by the pituitary gland, TSH signals the thyroid gland to release hormones that regulate the body’s metabolism, energy levels, and heart rate. According to the American Thyroid Association, this test is the primary tool doctors use to evaluate thyroid function.
If TSH levels are too high, it often indicates hypothyroidism, meaning the thyroid is underactive. If levels are too low, it may signal hyperthyroidism, where the gland is overactive. Because thyroid symptoms often mimic other conditions—such as stress, aging, or menopause—a blood test is necessary for an accurate diagnosis.
Why thyroid health matters
The thyroid is a butterfly-shaped gland located at the base of the neck. When it malfunctions, it can affect nearly every organ system in the body. The National Institute of Diabetes and Digestive and Kidney Diseases notes that millions of Americans live with thyroid disorders, many of which remain undiagnosed.
Vergara, who was diagnosed with thyroid cancer in her 20s, has frequently highlighted the importance of early detection. After undergoing a thyroidectomy and subsequent radioactive iodine treatment, she has remained vocal about the necessity of routine monitoring. Her advocacy emphasizes that patients should not wait for severe symptoms to appear before requesting a screening from their primary care provider.
How to discuss thyroid testing with a doctor
Patients concerned about their thyroid should prepare for their appointment by tracking persistent symptoms. Common indicators of thyroid imbalance include:
- Unexplained weight gain or difficulty losing weight
- Persistent fatigue or lethargy
- Increased sensitivity to cold or heat
- Changes in heart rate
- Unexplained anxiety or depression
When meeting with a physician, it is appropriate to ask specifically about a TSH panel. According to the Mayo Clinic, a physician will interpret the TSH result alongside other markers, such as Free T4, to determine if the thyroid is functioning within the normal range.
Comparing diagnostic approaches
While the TSH test is the gold standard for initial screening, clinical practice varies regarding when to test.
| Organization | Screening Recommendation |
| :— | :— |
| American Thyroid Association | Recommends screening starting at age 35 and every five years thereafter. |
| U.S. Preventive Services Task Force | States there is insufficient evidence to recommend for or against routine screening in asymptomatic adults. |
The difference in these guidelines stems from the debate over whether universal screening provides a clear benefit for patients without symptoms. However, most medical professionals agree that testing is essential for anyone displaying clinical symptoms of thyroid disease or those with a family history of endocrine disorders.
Key takeaways for patients
- Know your history: A family history of thyroid disease increases your risk, making routine testing more important.
- Track symptoms: Keep a log of energy levels, weight changes, and skin or hair texture changes to share with your doctor.
- Request the test: If you feel your symptoms are not being addressed, specifically ask your doctor if a TSH test is appropriate for your situation.
Thyroid health is manageable with early detection and appropriate medical intervention. By remaining proactive and informed, patients can work with their healthcare teams to ensure their hormone levels remain within a healthy, functional range.