Graves' Disease
What is Graves' disease?
Graves' disease is an autoimmune disorder that causes your thyroid gland to work too hard. Your immune system mistakenly attacks the thyroid and triggers it to produce too much thyroid hormone. This overproduction is called hyperthyroidism.
The thyroid is a small gland in your neck that controls metabolism, energy levels, and temperature. When it makes too much hormone, your body speeds up in ways that can feel uncomfortable. You might notice a racing heartbeat, weight loss, or feeling anxious and jittery.
Graves' disease affects about 1 in 200 people and is more common in women than men. Most people develop it between ages 30 and 50. The condition is manageable with proper diagnosis and treatment. Early detection through blood testing helps prevent complications.
Symptoms
- Rapid or irregular heartbeat
- Unexplained weight loss despite normal or increased appetite
- Nervousness, anxiety, or irritability
- Trembling hands or fingers
- Increased sweating and heat sensitivity
- Fatigue or muscle weakness
- Difficulty sleeping
- Frequent bowel movements or diarrhea
- Goiter, or visible swelling in your neck
- Bulging eyes, called Graves' ophthalmopathy
- Changes in menstrual periods
- Thinning skin or brittle hair
Some people with Graves' disease have mild symptoms that develop slowly. Others experience sudden, severe symptoms. About 30% of people with Graves' disease develop eye problems that cause bulging or irritation.
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Causes and risk factors
Graves' disease happens when your immune system creates antibodies that attack the thyroid gland. These antibodies, called thyroid-stimulating immunoglobulins, trick the thyroid into making too much hormone. Doctors do not know exactly why the immune system turns against the thyroid. Genetics play a role, as certain genes like HLA DQB1 increase your risk. People with family members who have Graves' disease or other autoimmune conditions are more likely to develop it.
Several risk factors can trigger Graves' disease. Women are 5 to 10 times more likely than men to develop the condition. Smoking increases both your risk and the severity of symptoms, especially eye problems. High stress levels may trigger the onset of disease in people who are genetically vulnerable. Other autoimmune disorders like type 1 diabetes or rheumatoid arthritis also raise your risk. Pregnancy can trigger Graves' disease, often appearing within the first year after giving birth.
How it's diagnosed
Doctors diagnose Graves' disease through blood tests that measure thyroid hormone levels and antibodies. Key tests include T4 and Free T4, which show how much thyroid hormone is in your blood. High levels of these hormones suggest hyperthyroidism. Testing for HLA DQB1 can reveal genetic risk factors associated with autoimmune thyroid conditions. Your doctor may also check TSH, or thyroid-stimulating hormone, which is usually very low in Graves' disease.
Rite Aid offers blood testing that includes thyroid markers like T4 and Free T4. You can get tested at any of the 2,000 Quest Diagnostics locations nationwide. Testing twice a year helps you catch thyroid problems early, before symptoms become severe. If blood tests suggest Graves' disease, your doctor may order additional tests like a radioactive iodine uptake scan to confirm the diagnosis.
Treatment options
- Anti-thyroid medications like methimazole or propylthiouracil to reduce hormone production
- Beta-blockers to manage rapid heartbeat, tremors, and anxiety
- Radioactive iodine therapy to shrink the thyroid gland
- Thyroid surgery to remove part or all of the thyroid gland in severe cases
- Quitting smoking to reduce symptoms and eye complications
- Managing stress through meditation, yoga, or counseling
- Eating a balanced diet with enough calcium and vitamin D for bone health
- Limiting iodine intake, as excess iodine can worsen hyperthyroidism
- Regular follow-up blood tests to monitor thyroid hormone levels
- Eye drops or special glasses if you develop eye problems
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Frequently asked questions
Hyperthyroidism means your thyroid makes too much hormone. Graves' disease is the most common cause of hyperthyroidism, accounting for about 70% of cases. Graves' disease is specifically an autoimmune condition where antibodies attack the thyroid. Other causes of hyperthyroidism include thyroid nodules and inflammation.
Graves' disease rarely goes away without treatment. About 20 to 30% of people experience remission after taking anti-thyroid medication for 12 to 18 months. However, many people relapse and need ongoing treatment. Without treatment, Graves' disease can cause serious heart problems and bone loss.
Graves' disease and anxiety share symptoms like rapid heartbeat, nervousness, and trouble sleeping. Graves' disease also causes weight loss, heat sensitivity, and sometimes eye bulging. A simple blood test measuring T4 and Free T4 can tell the difference. If thyroid hormones are high, the symptoms are likely from Graves' disease.
Many people gain weight after starting treatment because their metabolism slows down to normal levels. The weight loss from Graves' disease was not healthy. Your doctor can help you maintain a healthy weight through diet and exercise. Some treatments like radioactive iodine may require thyroid hormone replacement afterward.
Yes, you can get pregnant with Graves' disease, but uncontrolled hyperthyroidism can affect fertility. It is important to get your thyroid levels stable before trying to conceive. Some anti-thyroid medications are safer during pregnancy than others. Work closely with your doctor to manage the condition throughout pregnancy.
About 30% of people with Graves' disease develop Graves' ophthalmopathy, or thyroid eye disease. The same antibodies that attack the thyroid also attack tissues around the eyes. This causes inflammation and swelling that pushes the eyes forward. Smoking makes eye problems worse, so quitting is important.
You should test thyroid levels every 4 to 6 weeks when starting treatment. Once your levels are stable, testing every 3 to 6 months is usually enough. Rite Aid offers blood testing twice a year, which helps you track long-term thyroid health. More frequent testing may be needed if you are pregnant or changing medications.
Graves' disease has a genetic component but is not directly inherited. Having a family member with Graves' disease or another autoimmune condition increases your risk. Certain genes like HLA DQB1 are linked to higher risk. However, most people with these genes never develop the condition.
Stress does not directly cause Graves' disease, but it can trigger symptoms in people who are already at risk. Major life stressors like loss, trauma, or illness often precede diagnosis. Managing stress through relaxation techniques may help prevent flares. Addressing stress is an important part of root-cause medicine for autoimmune conditions.
Untreated Graves' disease can lead to serious complications. These include irregular heartbeat, heart failure, and stroke. Bone loss, or osteoporosis, can develop from long-term high thyroid hormone levels. A rare but life-threatening condition called thyroid storm can occur, causing fever, confusion, and rapid heart rate.