Your thyroid produces thyroid hormone, which controls many activities in your body, including how fast you burn calories and how fast your heart beats — diseases of the thyroid cause it to make either too much or too little of the hormone. Depending on how much or how little hormone your thyroid produces, you may often feel restless or tired, or you may lose or gain weight. Women are more likely than men to have thyroid diseases, especially right after pregnancy and after menopause. This post “Thyroid Disease: 3 Problems & 6 Types Affecting Women,” seeks to provide helpful information about this disease.
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4 Facts to Know about Thyroid Disease1
- Nearly 1 in 20 Americans ages 12 and older has an under-active thyroid or hypothyroidism.
- A smaller number of people—about 1 in 100—has an over-active thyroid, called hyperthyroidism.
- Thyroid problems are most likely to occur in women or people over age 60.
- During pregnancy, thyroid hormones can affect the health of both the mother and the developing baby.
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Jay Harold used information from the Office of Women Health2 to bring relevant and timely knowledge to you.
What is the thyroid?
Your thyroid is a small butterfly-shaped gland found at the base of your neck, just below your Adam’s apple. This gland makes thyroid hormone that travels in your blood to all parts of your body. The thyroid hormone controls your body’s metabolism in many ways, including how fast you burn calories and how fast your heartbeats.
How do thyroid problems affect women?
Women are more likely than men to have thyroid disease. One in eight women will develop thyroid problems during her lifetime. In women; thyroid diseases can cause:
- Problems with your menstrual period. Your thyroid helps control your menstrual cycle. Too much or too little thyroid hormone can make your periods very light, heavy, or irregular. Thyroid disease also can cause your periods to stop for several months or longer; a condition called amenorrhea. If your body’s immune system causes thyroid disease, other glands, including your ovaries, may be involved. This can lead to early menopause (before age 40).
- Problems getting pregnant. When thyroid disease affects the menstrual cycle, it also affects ovulation. This can make it harder for you to get pregnant.
- Problems during pregnancy. Thyroid problems during pregnancy can cause health problems for the mother and the baby.
Sometimes, symptoms of thyroid problems are mistaken for menopause symptoms. Thyroid disease, especially hypothyroidism, is more likely to develop after menopause.
Are some women more at risk for thyroid disease?
Yes. You may want to talk to your doctor about getting tested if you:
- Had a thyroid problem in the past
- Had surgery or radiotherapy affecting the thyroid gland
- Have a condition such as a goiter, anemia, or type 1 diabetes
Screening for thyroid disease is not recommended for most women.
What kinds of thyroid disease affect women?
These thyroid diseases affect more women than men:
- Disorders that cause hypothyroidism
- Disorders that cause hyperthyroidism
- Thyroiditis, especially postpartum thyroiditis
- goiter
- Thyroid nodules
- Thyroid cancer
What is hypothyroidism?
Hypothyroidism is when your thyroid does not make enough thyroid hormones. It is also called underactive thyroid. This slows down many of your body’s functions, like your metabolism.
The most common cause of hypothyroidism in the United States is Hashimoto’s disease. In people with Hashimoto’s disease, the immune system mistakenly attacks the thyroid. This attack damages the thyroid so that it does not make enough hormones. This is one of the main reasons Jay Harold wrote this post, “Thyroid Disease: 3 Problems & 6 Types Affecting Women.”
Hypothyroidism also can be caused by:
- Hyperthyroidism treatment (radioiodine)
- Radiation treatment of certain cancers
- Thyroid removal
What are the signs and symptoms of hypothyroidism?
Symptoms of hypothyroidism develop slowly, often over several years. At first, you may feel tired and sluggish. Later, you may develop other signs and symptoms of a slowed-down metabolism, including:
- Feeling cold when other people do not
- Constipation
- Muscle weakness
- Weight gain, even though you are not eating more food
- Joint or muscle pain
- Feeling sad or depressed
- Feeling very tired
- Pale, dry skin
- Dry, thinning hair
- Slow heart rate
- Less sweating than usual
- A puffy face
- A hoarse voice
- More than usual menstrual bleeding
You also may have high LDL or “bad” cholesterol, which can raise your risk for heart disease.
How is hypothyroidism treated?
Hypothyroidism is treated with medicine that gives your body the thyroid hormone it needs to work normally. The most common drugs are man-made forms of the hormone that your thyroid makes. You will likely need to take thyroid hormone pills for the rest of your life. When you take the pills as your doctor tells you to, the pills are very safe.
What is hyperthyroidism?
Hyperthyroidism, or overactive thyroid, causes your thyroid to make more thyroid hormone than your body needs. This speeds up many of your body’s functions, like your metabolism and heart rate.
The most common cause of hyperthyroidism is Graves’ disease. Graves’ disease is a problem with the immune system.
What are the signs and symptoms of hyperthyroidism?
At first, you might not notice the signs or symptoms of hyperthyroidism. Symptoms usually begin slowly. But, over time, a faster metabolism can cause symptoms such as:
- Weight loss, even if you eat the same or more food (most but not all people lose weight)
- Eating more than usual
- Rapid or irregular heartbeat or pounding of your heart
- Feeling nervous or anxious
- Feeling irritable
- Trouble sleeping
- Trembling in your hands and fingers
- Increased sweating
- Feeling hot when other people do not
- Muscle weakness
- Diarrhea or more bowel movements than normal
- Fewer and lighter menstrual periods than normal
- Changes in your eyes that can include bulging of the eyes, redness, or irritation
Hyperthyroidism raises your risk for osteoporosis, a condition that causes weak bones that break easily. In fact, hyperthyroidism might affect your bones before you have any of the other symptoms of the condition. This is especially true of women who have gone through menopause or who are already at high risk of osteoporosis.
How is hyperthyroidism treated?
Your doctor’s choice of treatment will depend on your symptoms and the cause of your hyperthyroidism. Treatments include:
- Medicine.
- Antithyroid medicines block your thyroid from making new thyroid hormone. These drugs do not cause lasting damage to the thyroid.
- Beta-blockers block the effects of thyroid hormone on your body. These medicines can be helpful in slowing your heart rate and treating other symptoms until one of the other forms of treatment can take effect. Beta-blockers do not reduce the amount of thyroid hormones that are made.
- Radioiodine. This treatment kills the thyroid cells that make thyroid hormones. Often, this causes permanent hypothyroidism.
- Surgery. Thyroid surgery removes most or all of the thyroid. This may cause permanent hypothyroidism.
What is thyroiditis?
Thyroiditis is inflammation of the thyroid. It happens when the body’s immune system makes antibodies that attack the thyroid.
Causes of thyroiditis include:
- Autoimmune diseases, like type 1 diabetes and rheumatoid arthritis
- Genetics
- Viral or bacterial infection
- Certain types of medicines
Two common types of thyroiditis are Hashimoto’s disease and postpartum thyroiditis.
What is postpartum thyroiditis?
Postpartum thyroiditis, or inflammation of the thyroid after giving birth, affects 10% of women.3 It often goes undiagnosed because symptoms are much like the “baby blues” that may follow the delivery. Women with postpartum thyroiditis may feel very tired and moody.
Postpartum thyroiditis typically happens in two phases, though not everyone with the condition goes through both stages:
- The first phase starts 1 to 4 months after giving birth and typically last 1 to 2 months. In this phase, you may have signs and symptoms of hyperthyroidism because the damaged thyroid leaks thyroid hormones out into the bloodstream.
- The second phase starts about 4 to 8 months after delivery and lasts 6 to 12 months. In this phase, you may have signs and symptoms of hypothyroidism because the thyroid has lost most of its hormones or because the immune attack is over and the thyroid may recover later.
Who is at risk for postpartum thyroiditis?
Your immune system may cause postpartum thyroiditis. If you have an autoimmune disease, like type 1 diabetes, your risk is higher.
Your risk is also higher if:
- Have a personal history or family history of thyroid disorders
- Had postpartum thyroiditis after a previous pregnancy
- Have chronic viral hepatitis
How is postpartum thyroiditis treated?
Treatment for postpartum thyroiditis depends on the phase of the disease and what symptoms you have. For example, if you get symptoms of hyperthyroidism in the first phase, your treatment may include medicines to slow down the heart rate.
In most women who have postpartum thyroiditis, the thyroid returns to normal within 12 to 18 months after symptoms start. But if you have a history of postpartum thyroiditis, your risk is higher for developing permanent hypothyroidism within 5 to 10 years.
What is a goiter?
A goiter is an unusually enlarged thyroid gland. It may happen only for a short time and may go away on its own without treatment. Or it could be a symptom of another thyroid disease that requires treatment. goiter is more common in women than in men and especially in women before menopause.
Some common causes of goiter include:
Usually, the only symptom of a goiter is a swelling in your neck. It may be large enough that you can see it or feel the lump with your hand. A very large goiter can also cause a tight feeling in your throat, coughing, or problems swallowing or breathing.
Your doctor will do tests to see if it is caused by another thyroid disease.
How is goiter treated?
You may not need treatment if your thyroid works normally, and the symptoms do not bother you.
If you do need treatment, medicine should make the thyroid shrink back to near normal size. You may need surgery to take out part or most of the thyroid.
What are thyroid nodules?
A thyroid nodule is a swelling in one section of the thyroid gland. The nodule may be solid or filled with fluid or blood. You may have just one thyroid nodule or many.
Thyroid nodules are common and affect four times as many women as men. Researchers do not know why nodules form in otherwise normal thyroids.
What are the signs and symptoms of thyroid nodules?
Most thyroid nodules do not cause symptoms and are not cancerous. Some thyroid nodules make too much thyroid hormone, causing hyperthyroidism. Sometimes, nodules grow so big that they cause problems with swallowing or breathing. About one-third of nodules are found by the patient, another third by the doctor, and the other third through an imaging test of the neck.
You can sometimes see or feel a thyroid nodule yourself. Stand in front of a mirror and raise your chin slightly. Look for a bump on either side of your windpipe below your Adam’s apple. If the bump moves up and down when you swallow, it may be a thyroid nodule. Ask your doctor to look at it.
How are thyroid nodules treated?
Treatment depends on the type of nodule or nodules that you have. Treatments include:
- Watchful waiting. If your nodule is not cancerous, your doctor may decide to just watch your condition. You will get regular physical exams, blood tests, and perhaps thyroid ultrasound tests. If your nodule does not change, you may not need further treatment.
- Surgery. Surgery may be necessary to take out nodules that may be cancerous or large nodules that cause problems breathing or swallowing.
- Radioiodine. This type of treatment is helpful if you have nodules that make too much thyroid hormone. Radioiodine causes nodules to shrink and make smaller amounts of thyroid hormone.
What is thyroid cancer?
Thyroid cancer happens when cancer cells form from the tissues of the thyroid gland.
Most people with thyroid cancer have a thyroid nodule that does not cause any symptoms. If you do have symptoms, you may have swelling or a lump in your neck. The lump may cause problems swallowing. Some people get a hoarse voice.
To tell if the lump or nodule is cancerous, your doctor will order specific tests. Most thyroid nodules are not cancerous.
For more information about thyroid cancer, visit the National Cancer Institute’s thyroid cancer page.
Who is at risk for thyroid cancer?
About three times as many women get thyroid cancer as men. The number of women with thyroid cancer is also going up. By 2020, the number of women with thyroid cancer is expected to double, from 34,000 women to more than 70,000 women.
Thyroid cancer is more common in women who:
- Are between the ages of 25 and 65
- Had radiation therapy to the head or neck, especially in childhood, to treat cancer
- Have a history of goiter
- Have a family history of thyroid cancer
How is thyroid cancer treated?
The primary treatment for thyroid cancer is surgery to take out the whole thyroid gland or as much of it as can be safely removed. Surgery alone can cure thyroid cancer if the cancer is small and has not yet spread to lymph nodes.
Your doctor may also use radioiodine therapy after surgery. Radioiodine therapy destroys any thyroid cancer cells that were not removed during surgery or that have spread to other parts of the body.
Your doctor may also talk with you about other treatments for thyroid cancer. Learn more about thyroid cancer treatments at the National Cancer Institute.
How are thyroid diseases diagnosed?
It can be hard to tell if you have a thyroid disease. The symptoms are the same as many other health problems. Your doctor may start by asking about your health history, and if any of your family members have had thyroid disease. Your doctor may also give you a physical exam and check your neck for thyroid nodules.
Depending on your symptoms, your doctor may also do other tests, such as:
- Blood tests. Testing the level of thyroid stimulating hormone (TSH) in your blood can help your doctor figure out if your thyroid is overactive or underactive. TSH tells your thyroid to make thyroid hormones. Depending on the results, your doctor might do another blood test to check levels of one or both thyroid hormones in your blood.
- Radioactive iodine uptake test. For this test, you swallow a liquid or capsule that holds a small dose of radioactive iodine (radioiodine). The radioiodine collects in your thyroid because your thyroid uses iodine to make thyroid hormone.
Thyroid Disease: 3 Problems & 6 Types Affecting Women (Why this is important!)
High levels of radioiodine mean that your thyroid makes too much of the thyroid hormone. Low levels mean that your thyroid does not make enough thyroid hormone.
- Thyroid scan. A thyroid scan uses the same radioiodine dose that was given by mouth for your uptake test. You lie on a table while a special camera makes an image of your thyroid on a computer screen. This test shows the pattern of iodine uptake in the thyroid. Three types of nodules show up in this test:
- “Hot” nodules. These thyroid nodules show up on the scan more brightly than normal thyroid nodules. They take up more radioiodine than the surrounding thyroid. They also make more hormone than normal thyroids. Less than 1% of these nodules are cancerous.
- “Warm” nodules. These nodules take up the same amount of radioiodine as normal thyroid and make a normal amount of hormones. Only 5% to 8% of these nodules are cancerous.
- “Cold” nodules. These nodules show up as dark areas on the scan. They do not take up much radioiodine and do not make thyroid hormones. Many nodules are cold. Up to 15% of these nodules are cancerous.
- Thyroid ultrasound. The thyroid ultrasound uses sound waves to take a picture of the thyroid on a computer screen. This test can help your doctor tell what type of nodule you have and how large it is. You may need more thyroid ultrasounds over time to see if your nodule is growing or shrinking.
Ultrasound may also be helpful in finding thyroid cancer, although, by itself, it cannot be used to diagnose thyroid cancer.
- Thyroid fine needle biopsy. This test tells whether thyroid nodules have normal cells in them. Your doctor may numb an area on your neck. Your doctor will then stick a very thin needle into the thyroid to take out some cells and fluid. A doctor will then look at the cells under a microscope to see if they are normal. Cells that are not normal could mean thyroid cancer.
Can thyroid disease cause problems getting pregnant?
Both hyperthyroidism and hypothyroidism can make it harder for you to get pregnant. This is because problems with the thyroid hormone can upset the balance of the hormones that cause ovulation. Hypothyroidism can also cause your body to make more prolactin, the hormone that tells your body to produce breastmilk. Too much prolactin can prevent ovulation.
Thyroid problems can also affect the menstrual cycle. Your periods may be heavier or irregular, or you may not have any periods at all for several months or longer (called amenorrhea).
How does thyroid disease affect pregnancy?
Pregnancy-related hormones raise the level of thyroid hormones in the blood. Thyroid hormones are necessary for the baby’s brain development while in the womb.
It can be harder to diagnose thyroid problems during pregnancy because of the change in hormone levels that normally happen during pregnancy. But it is especially important to check for problems before getting pregnant and during pregnancy. Uncontrolled hyperthyroidism and hypothyroidism can cause problems for both mother and baby.
Hyperthyroidism that is not treated with medicine during pregnancy can cause:
- Premature birth (birth of the baby before 39 to 40 weeks, or full-term)
- Preeclampsia, a serious condition starting after 20 weeks of pregnancy. Preeclampsia causes high blood pressure and problems with the kidneys and other organs. The only cure for preeclampsia is childbirth.
- Thyroid storm (a sudden, severe worsening of symptoms)
- Fast heart rate in the newborn, which can lead to heart failure, poor weight gain, or enlarged thyroid that can make it hard to breathe
- Low birth weight (smaller than 5 pounds)
- Miscarriage
Hypothyroidism that is not treated with medicine during pregnancy can cause:4
- Anemia (lower than normal number of healthy red blood cells)
- Preeclampsia
- Low birth weight (smaller than 5 pounds)
- Miscarriage
- Stillbirth
- Problems with the baby’s growth and brain development
Did we answer your question about thyroid diseases?
For more information about thyroid diseases, call the OWH Helpline at 1-800-994-9662 or contact the following organizations:
- National Cancer Institute (NCI), NIH
Phone Number: 800-422-6237 - National Endocrine and Metabolic Diseases Information Service, NIDDK, NIH
Phone Number: 800-860-8747 - American Thyroid Association(link is external)
- Hormone Health Network(link is external)
Phone Number: 800-467-6663 - Thyroid Cancer Survivors’ Association, Inc.(link is external)
Phone Number: 877-588
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