Why your thyroid matters more than you think: thyroid symptoms and when to get tested

Read Time

4 Minutes

Written by

Team Curative

Published

Feb 9, 2026

Your thyroid is a small gland with a big job. Located at the front of your neck, it produces hormones that regulate metabolism, support healthy energy levels and help coordinate vital functions throughout the body. When it’s balanced, everything runs smoothly. When it’s not, even everyday tasks can feel harder than they should.

Thyroid imbalances can develop gradually and may be mistaken for normal changes in energy or mood, making them easy to miss. That’s why awareness matters.

Thyroid symptoms and when to get tested | Curative

In this article, you’ll learn:

Common signs and symptoms of thyroid imbalances
The difference between hypothyroidism and hyperthyroidism
Who should get thyroid screenings and when
How early detection of thyroid disorders helps

How to tell if your thyroid is out of balance

Thyroid hormones affect many systems in the body which means an imbalance can show up in different ways. Symptoms may vary depending on whether the thyroid is underactive or overactive but there are several common signs to watch for.

Persistent fatigue or low energy
Unexplained weight changes
Changes in heart rate
Sensitivity to cold or heat
Mood changes
Changes in hair, skin or nails

Hypothyroidism vs. Hyperthyroidism: What’s the difference?

While both conditions involve the thyroid gland, they have opposite effects on how the body functions. One slows many systems down, while the other speeds them up.

Hypothyroidism (underactive thyroid)

Hypothyroidism is the most common thyroid condition, especially in the United States. It occurs when the thyroid does not produce enough hormones, slowing down functions such as metabolism, heart rate and temperature regulation.

The most common cause is Hashimoto’s disease, an autoimmune condition in which the immune system attacks the thyroid. Other causes may include iodine deficiency, certain medications, thyroid surgery or radiation therapy. Underactive thyroid is more common in women, especially those over age 60. People with a family history of thyroid disease or other autoimmune conditions may also be at a higher risk.

Hyperthyroidism (overactive thyroid)

Hyperthyroidism develops when the thyroid releases an excess amount of hormone, speeding up processes like metabolism, heart rate and body temperature. This heightened activity can place added strain on multiple systems in the body. If left untreated, it can increase the risk of heart rhythm problems and bone loss.

The most frequent cause of hyperthyroidism is Grave’s disease, an autoimmune condition that stimulates the thyroid to produce too much hormone. It may also result from thyroid nodules, inflammation of the thyroid (thyroiditis) or excessive iodine intake.

Overactive thyroid is also more common in women. It often appears earlier in adulthood though it can occur at any age. A family history of thyroid or autoimmune disorders may increase risk.

When should you get your thyroid checked?

Thyroid disorders are typically identified through a simple blood test. Screening involves measuring thyroid-stimulating hormone (TSH) levels. When needed, additional tests such as T3 and T4 are also measured to better understand how your thyroid is functioning.

You may want to talk with your primary care doctor or OB/GYN about thyroid testing if you have the following symptoms or risk factors:

Notice persistent changes in energy, weight, mood or heart rate
Have a family history of thyroid disease
Are pregnant, recently postpartum or planning pregnancy
Live with an autoimmune condition such as Type 1 diabetes or lupus
Are over 60, particularly if you’re female
Take medications that may affect thyroid functions

Why early detection of thyroid disorders matters

Identifying a thyroid imbalance early can make a meaningful difference in long-term health. When left untreated, both hypothyroidism and hyperthyroidism can contribute to complications such as heart problems, fertility challenges and changes in bone health.

Early diagnosis allows treatment to begin sooner, which can help restore hormone balance, improve energy levels and support overall quality of life. In many cases, thyroid conditions are manageable with medication and regular monitoring.

Getting your thyroid tested shouldn’t be complicated

Thyroid screening itself is a simple blood test. But understanding your coverage, scheduling lab work and coordinating follow-up care can sometimes feel less straightforward. With Curative, you get:

$0 cost sharing for eligible thyroid screening
Support during your Baseline Visit to confirm eligibility
Help from your Curative Care Navigator to:
- Find convenient access to bloodwork labs
- Coordinate any needed follow-up care
Reminder support to keep screenings regular

Discover how Curative gives you the tools and resources to stay on track with preventive care so you can feel confident and in control of your long-term health. Already a Curative member? To find a primary care doctor or specialist to discuss your thyroid health, you can search by specialty, location or name using our provider search tool.