Graves' Disease and Hyperthyroidism in Black Women

Graves' disease is an autoimmune condition where your immune system attacks the thyroid and forces it to make too much hormone. That excess hormone speeds up nearly every system in your body: heart, metabolism, mood, and bowels. It is the cause of about 80% of hyperthyroidism in the United States, and it hits women far more often than men. In active-duty US military data, the incidence of Graves' disease was 92% higher in Black women than in white women, and 153% higher in Black men.

Hyperthyroidism is your body running too hot. The classic signs are a fast or pounding heartbeat, losing weight even though your appetite is up, feeling hot when no one else does, shaky hands, trouble sleeping, sweating, and more frequent bowel movements. Many people also feel anxious, irritable, or on edge. An enlarged thyroid, a goiter, can show as swelling at the base of the neck.

Graves' also has an eye component called Graves' ophthalmopathy or thyroid eye disease. More than a third of people with Graves' develop it. The immune system attacks the muscle and tissue around the eyes, which can cause bulging eyes, puffiness, irritation, light sensitivity, double vision, and in severe cases pressure on the optic nerve. For the broader picture of how thyroid problems show up in Black women, including skin and hair changes, see our guide to thyroid disease in Black women.

The symptoms overlap with conditions that get diagnosed first. A racing heart and palpitations get worked up as a heart problem. Anxiety, restlessness, and trouble sleeping get labeled a panic or anxiety disorder. Heat intolerance, mood swings, and irregular periods get chalked up to perimenopause or menopause. Each of those is a real possibility, but when several arrive together, a thyroid panel settles it in one blood draw.

Delay is the pattern that hurts Black patients most. Research on disparities in thyroid care found that Black patients with benign thyroid disease present with larger thyroid glands and after a longer duration of disease than white patients. They are also more likely to be treated with surgery first for Graves' (about 56% as a first-line treatment versus 28% for non-Black patients), a gap that reflects access to other options more than clinical need. Black patients undergoing thyroid surgery also had higher rates of complications, including neck hematoma and recurrent laryngeal nerve injury affecting the voice.

The presentation can also be deceptive in the eyes. In a study of thyroid eye disease, Black patients presented significantly younger than white patients (average age 48 versus 57) and with fewer visible external inflammatory signs such as chemosis and eyelid swelling. That matters because milder-looking eyes can be read as milder disease. They were not: rates of compressive optic neuropathy, the vision-threatening complication, and decompression surgery were comparable between Black and white patients. A separate review of Black and Hispanic patients found higher-than-expected rates of proptosis (bulging), eye-muscle restriction, and optic neuropathy.

The combination is the risk: a higher baseline incidence of Graves', longer delays to diagnosis, and presentations that can look milder than they are. That is how a treatable condition turns into severe disease or an emergency. Some Black patients first reach care already in thyroid storm. One documented case described a 65-year-old Black woman with untreated Graves' who arrived with atrial fibrillation and newly diagnosed high-output heart failure, her thyroid storm confirmed by markedly high thyroid hormones and an undetectable TSH.

Diagnosis starts with blood tests. A low or undetectable TSH with a high free T4 points to hyperthyroidism. To confirm Graves' specifically, doctors test for thyroid antibodies: thyroid-stimulating immunoglobulin (TSI) or TSH-receptor antibodies (TRAb), which are the antibodies driving the disease. When the cause is unclear, a radioactive iodine uptake test or thyroid scan shows how much iodine the gland is taking up; Graves' typically shows high, diffuse uptake. A Doppler ultrasound can show increased blood flow to the gland.

There are three established treatments, and the right one depends on your situation. Antithyroid drugs (methimazole, or propylthiouracil) block the thyroid from making hormone and can sometimes put Graves' into remission. Radioactive iodine destroys overactive thyroid tissue and is a common definitive option, though most people then need lifelong thyroid hormone replacement. Surgery (thyroidectomy) removes the gland and is chosen for large goiters, certain eye disease, or when other options are not suitable. The American Thyroid Association guidelines lay out how doctors choose among them.

Pregnancy changes the plan. Methimazole in the first trimester is linked to a higher risk of certain birth defects, so guidelines favor propylthiouracil before and during early pregnancy, then often switching afterward. Radioactive iodine is not used during pregnancy or breastfeeding. If you have Graves' and are pregnant or planning to be, your thyroid management should be coordinated closely between an endocrinologist and your obstetric team.

If you suspect an overactive thyroid, the first step is simple and cheap: ask your primary care clinician for a TSH and free T4. If those are abnormal, you will likely be referred to an endocrinologist for antibody testing and a treatment plan. Bring a written list of symptoms and their timeline, since the pattern over time is what makes the diagnosis obvious. You can find a Black endocrinologist or Black-serving clinician in our directory if you want a provider who takes your concerns seriously from the first visit.