Thyroid problems can look like perimenopause because they share many symptoms: tiredness, weight changes, anxiety, low mood, poor sleep, period changes, brain fog, hair loss, palpitations and feeling too hot or too cold. Thyroid problems are common in women, and they can happen at the same time as perimenopause. The thyroid is checked with a blood test, so if your symptoms are severe, persistent, unusual for you or don't fit a typical menopause picture, it is worth talking to your doctor.
This article looks at one question: why can thyroid problems look so much like perimenopause, and when is it worth asking your doctor about your thyroid?
There is a very specific sentence many women say in their 40s:
“I don’t know what’s going on with me.”
Not dramatic. Not medical. Just honest.
You are tired, but not the normal kind of tired. Your weight is changing, although you are not doing anything wildly different. Your hair feels thinner. Your sleep is unpredictable. Your mood is not quite yours. Your period has changed. Sometimes your heart races. Sometimes you feel cold when everyone else is fine. Sometimes you are sweating at night and wondering whether your body has secretly joined a tropical climate.
And because you are over 40, the explanation often arrives quickly:
“Maybe it’s perimenopause.”
And yes, maybe it is.
The NHS lists changes to your periods, hot flashes, sleep problems, mood changes, brain fog, weight gain, palpitations and hair thinning among the symptoms of perimenopause and menopause. But here is the important part: thyroid problems can cause many of these symptoms too.
This is where women can get stuck.
If every symptom is explained as “just menopause,” a thyroid problem may be missed. If every symptom is blamed on the thyroid, perimenopause may be overlooked. And sometimes, because life likes to be efficient in the most annoying way, both are happening at the same time.
That does not mean you need to panic or start ordering every lab test available online.
It means you deserve a clearer map.
What Do Thyroid Hormones Actually Do?
Thyroid hormones help regulate your metabolism, which is how your body’s cells use energy, and they affect things such as heart rate and body temperature. When there is too little or too much thyroid hormone, many parts of the body can feel out of sync.
Your thyroid is a small, butterfly-shaped gland in the front of your neck. Small, but not shy.
According to the British Thyroid Foundation, the thyroid produces two hormones, thyroxine (T4) and tri-iodothyronine (T3), and their production is regulated by thyroid-stimulating hormone (TSH) from the pituitary gland in the brain. The tissues that need it convert T4 into T3, the active hormone.
A simple way to imagine it:
TSH is the message from the brain saying, “Thyroid, please do more or less.”
T4 is the thyroid’s main output.
T3 is the active form the body’s cells use.
Of course, the real system is more complex. But the key idea is simple: when there is too little thyroid hormone, the body’s metabolism slows down, and when there is too much, it speeds up.
And both can feel confusingly similar to midlife hormonal change.
Why Can Thyroid Problems Be Mistaken for Perimenopause?
Thyroid problems can be mistaken for perimenopause because both can affect periods, mood, sleep, energy, weight, hair, temperature and heartbeat. NICE guidance reminds doctors that in menopausal women, symptoms of thyroid problems may be mistaken for menopause, and a blood test is needed to show whether the thyroid is involved.
Perimenopause is common. Thyroid problems are common too, especially in women. The British Thyroid Foundation explains that an underactive thyroid is about 10 times more common in women than in men and that the risk increases with age, so it is common for women going through menopause to have an underactive thyroid as well. It describes both thyroid and menopause-related symptoms as “common, non-specific and overlapping.”
Doctors know this too. The UK guideline on thyroid disease from NICE includes a direct reminder for clinicians: “Be aware that in menopausal women symptoms of thyroid dysfunction may be mistaken for menopause.”
In 2024, the European Menopause and Andropause Society published its first position statement on thyroid disease and menopause. It notes that because both conditions can cause a wide range of symptoms, they can lead to diagnostic challenges and delayed diagnosis.
That is a very formal way of saying: no wonder women are confused.
Imagine a woman who is 46.
Her periods are irregular.
She is tired.
She is sleeping worse.
She feels anxious.
Her hair is shedding.
She has gained weight around the middle.
She cannot concentrate the way she used to.
This could be perimenopause.
It could also be a thyroid problem.
Or perimenopause plus low iron from heavier periods.
Or perimenopause plus a thyroid problem.
Or stress, poor sleep and a thyroid problem all sitting at the same table like unwelcome guests.
This is why the best question is not always, “Is this menopause?”
A better question is:
What else can look like menopause — and should we check it?
That question does not deny perimenopause. It protects you from having everything dismissed too quickly. Our guide Is this perimenopause, or is something else going on? looks at this question more broadly.
What Is Hypothyroidism, and Why Can It Look Like Menopause?
Hypothyroidism means the thyroid is underactive and does not make enough hormones. It can cause tiredness, feeling cold, weight gain, constipation, difficulty concentrating, low mood, dry skin and hair, and irregular or heavy periods, many of which overlap with perimenopause.
Hypothyroidism is the “slow down” version of thyroid problems.
The NHS describes an underactive thyroid as a common condition where the thyroid gland does not make enough hormones, and notes that symptoms may be mild, may not be easy to notice and “usually develop slowly and get worse over time.”
That slow onset is part of the problem. If symptoms appear gradually, many women explain them away.
“I’m just busy.”
“I’m getting older.”
“I need to exercise more.”
“I’m probably in perimenopause.”
“I’m tired because everyone needs something from me all the time.”
Some of that may be true. Especially the last one. If constant tiredness is your main concern, our guide on whether perimenopause can cause fatigue looks at the other causes worth considering.
The NHS lists these common symptoms of an underactive thyroid:
- feeling extremely tired,
- feeling cold more than usual,
- putting on weight,
- constipation,
- difficulty concentrating or thinking clearly,
- low mood or depression,
- dry skin, dry hair or hair loss,
- a croaky (hoarse) voice,
- irregular or heavy periods.
Now look at that list again through the eyes of a woman in perimenopause.
Fatigue? Common.
Weight changes? Common.
Brain fog? Common.
Low mood? Common.
Period changes? Common.
Hair changes? Common.
The NHS adds that some of these symptoms are common and can be caused by other conditions, “but it’s important to get them checked by a GP.” Not because every tired woman has a thyroid problem, but because guessing is not enough when symptoms overlap this much.
What Is Hyperthyroidism, and Why Can It Look Like Menopause or Anxiety?
Hyperthyroidism means the thyroid is overactive and makes too much thyroid hormone. It can cause anxiety, irritability, a fast or irregular heartbeat, sensitivity to heat, sweating, weight loss, trembling, poor sleep and period changes, which may be mistaken for perimenopause, hot flashes or panic.
Hyperthyroidism is the “speed up” version.
Cleveland Clinic describes it as a condition in which the thyroid “makes and releases high levels of thyroid hormone,” speeding up several bodily functions and causing symptoms like a rapid heart rate, weight loss, increased appetite and anxiety.
This can feel frightening, because symptoms may seem emotional when they are partly physical.
A racing heart can feel like anxiety.
Sweating can feel like hot flashes.
Poor sleep can feel like stress.
Irritability can feel like “I’m just not coping.”
Weight loss may be welcomed at first, until it comes with weakness, shakiness and feeling wired.
Symptoms and signs of an overactive thyroid listed by the NHS include:
- nervousness, anxiety and irritability,
- mood swings,
- difficulty sleeping,
- feeling tired all the time,
- sensitivity to heat,
- warm skin and excessive sweating,
- an irregular or unusually fast heart rate (palpitations),
- twitching or trembling,
- muscle weakness,
- diarrhea,
- weight loss, often despite an increased appetite,
- patchy hair loss or thinning,
- a swelling in your neck (goiter).
The NHS notes that these symptoms may develop gradually or suddenly. The American Thyroid Association also lists changes in menstrual periods, “often lighter and/or less frequent.”
Again, you can see the overlap. A woman in her late 40s with sweating, poor sleep, palpitations and anxiety might be told it is perimenopause. And it might be. But if her thyroid is overactive, she needs proper assessment and treatment. If anxiety is a big part of what you are feeling, our guide on whether perimenopause can cause anxiety may help too.
Palpitations deserve a special mention. The NHS says palpitations are common and usually harmless, and that they can be a sign of menopause, but also of an overactive thyroid, iron deficiency anemia or a heart rhythm problem. It advises seeing a GP if they keep coming back, happen more often or last longer than a few minutes. If palpitations do not go away, or come with chest pain, shortness of breath or fainting, call your local emergency number.
The point is not to become afraid of every heartbeat.
The point is to know when not to casually blame hormones.
Can You Have a Thyroid Problem and Perimenopause at the Same Time?
Yes. Thyroid problems and perimenopause often happen in the same stage of life, and one can be mistaken for the other. Symptoms may come from a combination of factors, and a thyroid problem that is not well controlled can make menopause symptoms harder to cope with.
Midlife is not exactly a quiet biological period.
The ovaries begin shifting toward menopause. Sleep may become lighter. Stress may be high. Children may still need you. Parents may need you. Work may need you. Your body may need you too, but politely waiting its turn does not seem to be one of its strengths.
And in the middle of all this, the thyroid may change as well. The two are different processes: perimenopause is about the ovaries, while in the UK the most common causes of thyroid problems are autoimmune conditions — Hashimoto’s disease for an underactive thyroid and Graves’ disease for an overactive one. The NHS notes that Hashimoto’s disease is most common in women and usually starts between the ages of 30 and 50.
The British Thyroid Foundation says it is not unusual for thyroid symptoms to be put down to menopause and vice versa, and that because both are common in midlife women, symptoms may be “a combination of factors that should all be addressed.” It also explains that if thyroid function is not stable, this can affect menopause symptoms, while a thyroid condition that is treated and stable should have minimal impact on them.
That last part is important: both can be true.
You may be in perimenopause and have a thyroid problem.
You may have normal thyroid tests and still have real perimenopause symptoms.
You may have heavier periods that lower your iron, and then tiredness gets blamed on menopause or the thyroid when iron is also part of the story.
If you already take thyroid medication, the British Thyroid Foundation notes that your dose needs may change during the menopause transition, partly because of changing estrogen levels and weight, and that a yearly blood test usually shows whether a change is needed.
Bodies are not tidy.
They do not organize symptoms by category for our convenience.
How Are Thyroid Hormones Connected to Periods?
Thyroid problems can change your periods. The NHS lists irregular or heavy periods among the symptoms of an underactive thyroid, while an overactive thyroid can make periods lighter or less frequent. Perimenopause changes periods too, so it is hard to tell the causes apart without a doctor.
Periods can be affected by many things besides the ovaries, and the thyroid is one of them.
Perimenopause can make periods come more or less often, and bleeding can get heavier or lighter. Thyroid problems can do some of the same things. You can see the problem.
If a 44-year-old woman develops irregular bleeding, perimenopause is a reasonable possibility. But it is not the only one. Other possible causes of heavier periods include fibroids, endometriosis, adenomyosis, conditions that make you bleed more easily, some medicines and, rarely, womb cancer. Hormonal contraception can also change your bleeding pattern.
This is why unusual bleeding deserves attention.
Not panic. Attention.
The NHS advises seeing a GP if heavy periods are affecting your life, if you have had heavy periods for some time, or if you bleed between periods or after sex. The NHS menopause pages also advise contacting your GP if your bleeding pattern has changed and you are bleeding more, not less, than before, and getting any bleeding after menopause checked, even a small amount.
Perimenopause may be the explanation.
But “probably perimenopause” should not become a blanket that covers everything without looking underneath.
Do You Need a Thyroid Test If You Are in Perimenopause?
Not automatically. Perimenopause is usually identified from your age, symptoms and cycle changes, while thyroid problems are checked with a blood test. Your doctor may suggest a thyroid test if your symptoms are severe, don’t fit a typical menopause picture or include warning signs such as unexplained weight changes or palpitations.
Many women want one clear test that says, “Yes, this is perimenopause,” or “No, this is your thyroid.”
Sadly, the body has not invested enough in customer service.
For perimenopause, the menopause guideline from NICE says that in otherwise healthy women aged 45 or over, it can be identified without laboratory tests if hot flashes or sweats have recently started and the menstrual cycle has changed. So a woman can be in perimenopause even if no single blood test “proves” it.
For the thyroid, it is different. The American Thyroid Association says that other health problems can cause the same symptoms, and that a blood test “is the only way to know for sure” whether you have an underactive thyroid. The NHS explains that a GP will ask about your symptoms and family history, may examine your neck, and may arrange blood tests to check your TSH and thyroxine (T4) levels.
So when is a thyroid test worth it? The British Thyroid Foundation says that if you have developed typical menopause symptoms after the age of 45, a thyroid test is not usually needed. But if your symptoms are severe and not consistent with menopause alone, or if your doctor identifies “red flag” features such as unexplained weight gain, weight loss or palpitations, your doctor will check your thyroid. NICE’s thyroid guideline adds that one symptom alone may not point to thyroid disease, and that doctors should consider thyroid tests for people with depression or unexplained anxiety.
One surprisingly important detail: biotin, a supplement often taken for hair and nails, can affect thyroid blood tests. NICE asks doctors to check about biotin intake because high amounts from supplements may lead to falsely high or low results. If you take biotin or any other supplement, tell your doctor before a blood test.
And please do not try to interpret thyroid results from a screenshot and three comments in an online group. The British Thyroid Foundation notes that being unwell for other reasons can affect a single thyroid test, and that borderline results are usually repeated. Results only make sense in the context of your symptoms and history.
A clear question for your doctor might be:
“I know I may be in perimenopause, but some of my symptoms also overlap with thyroid problems. Is a thyroid blood test worth doing for me?”
That is not demanding. That is reasonable.
Can Thyroid Problems Affect Weight During Menopause?
Yes, but they are rarely the only factor. An underactive thyroid can cause weight gain, while an overactive thyroid can cause weight loss, often despite a bigger appetite. Weight gain is also common in perimenopause and menopause, and sleep, stress, activity and medicines play a part too.
Weight is one of the most emotionally loaded symptoms for women after 40.
And honestly, no wonder.
A woman can spend decades learning how her body responds to food and movement, and then midlife arrives and changes the rules without asking permission.
The NHS says weight gain during perimenopause and menopause is common and often happens around the stomach and upper body. A thyroid problem can add another layer: the NHS lists putting on weight among the symptoms of an underactive thyroid, and weight loss, often despite an increased appetite, among the signs of an overactive one.
But a thyroid problem is not the explanation for every midlife weight change. That may be disappointing if you were hoping for one simple answer. The truth is less dramatic and more useful: weight changes after 40 often come from several things at once, including changing hormones, sleep, stress, activity, medicines and, for some women, thyroid function.
This is why blaming yourself is not useful. But neither is blaming one hormone automatically.
If weight changes come with other thyroid-type symptoms, such as feeling cold, constipation, dry skin and tiredness, or palpitations, sweating, trembling and anxiety, it is worth mentioning them together to your doctor.
And if thyroid tests are normal, that does not mean your symptoms are imaginary. It means the next part of the puzzle needs attention.
Can Thyroid Problems Affect Anxiety, Mood and Brain Fog?
Yes. The NHS lists low mood and difficulty concentrating among the symptoms of an underactive thyroid, and nervousness, anxiety, irritability and mood swings among the symptoms of an overactive thyroid. Perimenopause can also affect mood and memory.
This is one of the reasons thyroid problems can feel so personal.
When the symptom is constipation, you may think, “Something physical is happening.”
When the symptom is low mood, anxiety, irritability or brain fog, women often think, “Something is wrong with me.”
That distinction is unfair. The brain is part of the body.
An underactive thyroid may feel like mental fog: thoughts may feel slower, and concentration may take more effort. An overactive thyroid may feel like anxiety: wired, restless, easily irritated, unable to relax. Poor sleep can make all of this worse.
Perimenopause can bring mood swings, low mood, and problems with memory or concentration too, and the NHS notes that these may feel worse if you also have sleep problems and feel very tired. So again, the overlap is real. If brain fog is what you notice most, our article on brain fog during menopause covers other causes worth discussing with your doctor.
If mood changes are severe, persistent or frightening, do not wait for a hormone explanation. Talk to a healthcare professional. If you have thoughts of harming yourself, call your local emergency number, or find a free, confidential helpline in your country at findahelpline.com.
Hormones can influence mood. But suffering mentally should always be taken seriously, whatever the cause, or causes, turn out to be.
You are not required to “push through” just because you are in midlife.
Can Thyroid Problems Affect Hair Loss During Perimenopause?
Yes. The NHS lists dry hair or hair loss among the symptoms of an underactive thyroid, and patchy hair loss or thinning among the signs of an overactive thyroid. Hair thinning can also be a symptom of perimenopause and menopause, so hair changes are worth mentioning to your doctor.
Hair loss can feel deeply upsetting.
Not because women are vain, but because hair is tied to identity, confidence and the face you expect to see in the mirror.
The NHS lists hair thinning or hair loss among the symptoms of perimenopause and menopause. Both an underactive and an overactive thyroid can affect hair too. And other things, such as illness, stress or medicines, may be part of the picture.
So if your hair is thinning, do not assume it is “just age.” It is worth asking about.
And please be cautious with hair supplements. If you are thinking about one, talk to your doctor or pharmacist first — and remember that biotin, a common ingredient, can affect thyroid blood tests.
Hair loss is not silly. It deserves a proper conversation.
What Should You Track Before Seeing Your Doctor?
Before seeing your doctor, it can help to note your symptoms, when they started, whether they are getting worse, whether they come and go or are there most days, your recent period dates and how heavy your bleeding is, and any medicines and supplements you take.
A doctor does not need your life story in 47 chapters.
But clear information helps. The NHS suggests that it might be useful to make a list of all your symptoms and show it to your GP.
Helpful notes include:
- when symptoms started,
- whether they are getting worse,
- whether they come in waves or are there most days,
- your last few period dates,
- how heavy your bleeding is,
- hot flashes or night sweats,
- sleep quality,
- tiredness,
- mood or anxiety,
- palpitations,
- feeling cold or overheated,
- bowel changes,
- weight changes,
- hair shedding,
- medicines and supplements,
- caffeine and alcohol,
- major stress,
- family history of thyroid problems.
You can also write one short sentence: “What feels different from my normal is…”
That sentence can be powerful. Because sometimes women minimize symptoms in appointments. We suddenly become very polite and reasonable in front of a doctor, even if we were crying in the car ten minutes earlier.
Menoup lets you log symptoms like these over time, so you don’t have to rely on memory. Mona, the app’s AI companion, can help you look at those patterns and share general, evidence-informed information — it isn’t a substitute for advice from your doctor. You are not trying to diagnose yourself. You are trying to walk into the appointment with more than “I don’t feel right.”
Bring notes. You are allowed.
When Should You See a Doctor About Thyroid Symptoms?
See a doctor if you think you might have a thyroid problem, or if symptoms such as tiredness, weight changes, palpitations, anxiety, hair loss, period changes or feeling too hot or too cold are strong, persistent, worsening or unusual for you. Some symptoms need urgent help.
There is a difference between noticing normal midlife changes and quietly tolerating symptoms that deserve medical attention.
Perimenopause can be uncomfortable, but it should not become a black hole where every new symptom disappears without being checked.
The NHS advises seeing a GP if you think you might have an underactive or overactive thyroid. It is also worth talking to a doctor if you notice:
- tiredness that does not improve with rest,
- unexplained weight gain or weight loss,
- feeling unusually cold or unusually hot,
- new or worsening anxiety or low mood,
- palpitations that keep coming back or last longer than a few minutes,
- trembling or shakiness,
- heavier, irregular or unusual bleeding,
- a swelling at the front of your neck,
- symptoms that feel different from your usual pattern.
Get urgent help — call your local emergency number — if you have palpitations that do not go away or that come with chest pain, shortness of breath or fainting, or if you are finding it hard to breathe or hear a wheezing noise when you breathe. These are the situations the NHS lists as emergencies on its palpitations and goiter pages.
And see a doctor about any bleeding after menopause, even a small amount. If you ever have thoughts of harming yourself, call your local emergency number, or find a free, confidential helpline in your country at findahelpline.com.
You do not have to arrive at the appointment with the correct diagnosis. That is not your job. Your job is to notice what is changing, explain it clearly, and ask for help making sense of it.
You do not need to apologize for asking.
How Are Thyroid Problems Treated?
Treatment depends on whether the thyroid is underactive or overactive and on the cause. The NHS explains that an underactive thyroid is usually treated with levothyroxine tablets, while an overactive thyroid may be treated with medicine, radioactive iodine or surgery. Your doctor or specialist decides with you what is right for your situation.
The good news is that thyroid problems are often treatable once they are identified.
The less convenient news is that treatment needs proper monitoring. Thyroid medicine is not something to adjust based on energy levels, internet advice, or “my friend felt amazing on this dose.”
Treatment for an Underactive Thyroid
The NHS explains that an underactive thyroid is usually treated with levothyroxine tablets, which replace the hormone your body cannot make, and that most people need to take them for the rest of their lives. You have regular blood tests to check the dose, because being on the wrong dose can cause side effects. If you have side effects, talk to your GP or pharmacist.
Levothyroxine can also interact with other medicines and some supplements, including calcium and iron, so tell your doctor or pharmacist about everything you take.
Treatment for an Overactive Thyroid
The NHS describes three main treatments: medicine that stops the thyroid making too much hormone, radioactive iodine treatment and surgery. A medicine called a beta blocker may also be used to relieve some symptoms in the meantime. You are usually referred to a specialist in hormonal conditions (an endocrinologist), and because each treatment has benefits and drawbacks, the choice is made with your specialist, based on your own situation.
Can HRT Affect Thyroid Medication?
It can. The British Thyroid Foundation explains that oral estrogen in HRT can change how much thyroid hormone is available, so women who take thyroid medication may need their thyroid tests rechecked after starting HRT. Having a thyroid condition does not in itself rule out HRT; whether HRT is right for you is a decision to make with your doctor.
This is a more advanced point, but it matters if you take thyroid medication and are thinking about menopause hormone therapy.
The British Thyroid Foundation says that taking thyroid replacement “is not a contraindication to HRT,” and that women with normal thyroid function usually adapt well to HRT. For women who already have an underactive thyroid, it explains that oral estrogen changes the amount of thyroxine bound to proteins in the blood, so the thyroxine dose may need to increase, and it is helpful to recheck thyroid tests after starting tablet HRT.
This is about thyroid dosing only. It does not make one type of HRT better for everyone. Whether HRT is right for you, and which type, depends on your whole health history and is something to discuss with your doctor, who can explain the benefits and risks for your own situation. Our guide to estrogen replacement therapy explains more about what guidelines say.
If you take thyroid medication, make sure your doctor knows if you start, stop or change any hormone treatment, and if your symptoms change after starting something new. In everyday language: if you change one hormone-related treatment, another may need checking. This is not a reason to panic. It is a reason to coordinate care.
Can Lifestyle Changes Help Thyroid Problems?
Lifestyle cannot treat a thyroid condition; a diagnosed thyroid problem needs medical care. Everyday habits such as sleep, regular meals and movement can support your overall wellbeing, and supplements are something to discuss with your doctor or pharmacist.
Let’s be very clear: you cannot cure an underactive or overactive thyroid with positive thinking, celery juice, or a morning routine performed in linen.
If your thyroid is underactive or overactive, you need proper medical assessment and treatment.
But your thyroid does not live in isolation. It is part of your whole body, and the everyday basics still matter: sleep, regular meals, movement you can recover from, and some room to breathe.
Be careful with supplements marketed for the thyroid or for menopause. The British Thyroid Foundation warns that too much iodine can interfere with thyroid function and make existing thyroid conditions worse, and that some menopause supplements contain high amounts of iodine. Before taking any supplement or herbal remedy, talk to your doctor or pharmacist.
If palpitations are part of your picture, the NHS notes that avoiding triggers such as stress, smoking, caffeine and alcohol can help when palpitations are not caused by a health condition.
And if your memory is currently operating like a browser with 38 open tabs, writing things down is one of the simplest tools you have. It helps you understand your pattern, so you can ask better questions.
What Are the Key Takeaways About Thyroid Hormones and Menopause?
Thyroid problems and perimenopause can look very similar. Tiredness, weight changes, anxiety, sleep problems, period changes, hair loss, brain fog and feeling too hot or too cold may be related to hormones, the thyroid or both, so persistent or unusual symptoms are worth checking with a doctor.
Here is what to remember:
- Thyroid hormones help regulate your metabolism and affect heart rate and body temperature.
- Perimenopause and thyroid problems can cause overlapping symptoms, and doctors are reminded that thyroid symptoms may be mistaken for menopause.
- An underactive thyroid often feels like slowing down: tiredness, feeling cold, weight gain, constipation, dry skin, low mood, poor concentration and irregular or heavy periods.
- An overactive thyroid often feels like speeding up: palpitations, sensitivity to heat, sweating, anxiety, trembling, poor sleep, weight loss and lighter or less frequent periods.
- A thyroid problem and perimenopause can happen at the same time.
- Thyroid problems are checked with a blood test; whether you need one is a decision for you and your doctor.
- Biotin supplements can affect thyroid test results, so tell your doctor if you take them.
- If you take thyroid medication, tell your doctor about any change in hormone treatment.
- Do not assume everything is “just menopause,” especially if symptoms are severe, persistent, sudden, worsening or unusual for you.
And perhaps the most important point: you do not need to choose between “it is menopause” and “it is thyroid.” The body is allowed to be complicated. Your care should be allowed to be thoughtful.
Frequently Asked Questions
Can thyroid problems feel like hot flashes?
They can feel similar. An overactive thyroid can cause sensitivity to heat, warm skin, excessive sweating and palpitations, and hot flashes can also cause sweating and palpitations. A blood test can show whether the thyroid is involved, so talk to your doctor if you are not sure.
Should I get my thyroid checked if I’m in perimenopause?
Not automatically. The British Thyroid Foundation says a thyroid test is not usually needed if you developed typical menopause symptoms after 45. But if your symptoms are severe, don’t fit menopause alone, or include signs such as unexplained weight changes or palpitations, your doctor may check your thyroid.
Can biotin affect thyroid test results?
Yes. High amounts of biotin from supplements may lead to falsely high or low thyroid test results, which is why NICE asks doctors to check about biotin intake. If you take biotin or a hair, skin and nail supplement, tell your doctor before a blood test.
Will thyroid medication help my menopause symptoms?
Thyroid medication treats a thyroid problem; it does not treat perimenopause itself. The British Thyroid Foundation suggests that if your thyroid levels are well managed and symptoms continue with no other apparent cause, menopause is the likely explanation, and that it is worth talking to your doctor about your options.
Last updated: October 11, 2026
Medical Note: This article is for general information only and doesn’t replace advice, diagnosis or treatment from a healthcare professional. Thyroid problems and perimenopause can cause similar symptoms, and only your doctor can assess what is behind yours. If your symptoms are severe, sudden, worsening or worrying you, please talk to your doctor, and if you have chest pain, fainting or difficulty breathing, call your local emergency number.
References
- British Thyroid Foundation. Thyroid and menopause. 2024. btf-thyroid.org
- National Institute for Health and Care Excellence (NICE). Thyroid disease: assessment and management (NG145). Recommendations. 2019, updated 2023. nice.org.uk
- National Institute for Health and Care Excellence (NICE). Menopause: identification and management (NG23). Recommendations. 2015, updated 2026. nice.org.uk
- NHS. Underactive thyroid (hypothyroidism). 2025. nhs.uk
- NHS. Overactive thyroid (hyperthyroidism): symptoms. 2023. nhs.uk
- NHS. Overactive thyroid (hyperthyroidism): treatment. 2023. nhs.uk
- NHS. Overactive thyroid (hyperthyroidism): overview. 2023. nhs.uk
- NHS. Symptoms of menopause and perimenopause. 2026. nhs.uk
- NHS. Heart palpitations. 2026. nhs.uk
- NHS. Heavy periods. 2024. nhs.uk
- NHS. Postmenopausal bleeding. 2026. nhs.uk
- NHS. Goitre. 2026. nhs.uk
- NHS. Levothyroxine. 2026. nhs.uk
- American Thyroid Association. Hypothyroidism (underactive). thyroid.org
- American Thyroid Association. Hyperthyroidism (overactive). thyroid.org
- Cleveland Clinic. Hyperthyroidism. 2024. my.clevelandclinic.org
- Mintziori G, Veneti S, Poppe K, et al. EMAS position statement: Thyroid disease and menopause. Maturitas. 2024. europepmc.org