Thyroid disorders

The thyroid is a small, butterfly‑shaped gland in the front of your neck that helps control how your body uses energy. It makes two main hormones, T3 and T4, which regulate your metabolism, heart rate, body temperature, and digestion. The thyroid works with the pituitary gland, which sends TSH to tell it when to make more or fewer hormones. If the thyroid makes too little hormone (hypothyroidism) or too much (hyperthyroidism), it can affect your weight, energy, and mood. Overall, the thyroid gland helps keep your body balanced and running the way it should.

Thyroid disorders are fairly common, and many people have them without realizing it. In the United States, millions of adults live with conditions like hypothyroidism (an underactive thyroid) or hyperthyroidism (an overactive thyroid). These issues can happen at any age, but they are more common in women, especially as they get older. Thyroid disorders can cause symptoms like tiredness, weight changes, or mood shifts, which can be easy to overlook. The good news is that thyroid problems are usually easy to diagnose with a simple blood test and can be managed well with treatment, helping you feel more like yourself again.

Thyroid disorders are usually treated by an endocrinologist, a doctor who specializes in hormone‑related conditions. Endocrinologists have special training to diagnose and manage problems like hypothyroidism, hyperthyroidism, and thyroid nodules. However, many people start by seeing their primary care doctor, who can order thyroid blood tests and begin basic treatment. If your condition is more complex, your primary doctor may refer you to an endocrinologist for expert care. In some cases—such as large nodules or thyroid cancer—a surgeon who specializes in the thyroid may also be involved. The goal is to make sure you receive the care that helps you feel your best.

Anyone with symptoms of thyroid problems should get their thyroid checked. This includes feeling very tired, changes in weight, mood shifts, hair loss, feeling cold or hot all the time, or a fast or slow heartbeat. Women—especially those over 60, pregnant, or planning pregnancy—are at higher risk and may benefit from testing. People with a family history of thyroid disease or autoimmune conditions should also be checked. A simple blood test can show how well your thyroid is working, and early testing helps you get the right care so you can feel your best.

An overactive thyroid, also called hyperthyroidism, happens when your thyroid gland makes too much thyroid hormone. These extra hormones speed up your body’s metabolism, which can make you feel anxious, shaky, or unusually warm. You might notice a fast heartbeat, trouble sleeping, weight loss without trying, or more frequent bowel movements. Some people also feel tired or irritable. Hyperthyroidism can be caused by conditions like Graves’ disease or thyroid nodules. The good news is that it can be diagnosed with a simple blood test, and treatment can help you feel more balanced and healthy again.

An underactive thyroid, also called hypothyroidism, happens when your thyroid gland doesn’t make enough thyroid hormone. These hormones help control your metabolism, so when levels are low, your body slows down. You may feel very tired, gain weight, feel cold often, or notice dry skin, hair loss, constipation, or mood changes. Some people also have trouble concentrating. Hypothyroidism is common and can happen at any age, especially in women. A simple blood test can diagnose it. Treatment with daily thyroid medicine is usually very effective and can help you feel more like yourself again.