--- title: 'What Causes Fatigue In Menopause?' slug: fatigue-menopause-causes-what-is-behind-it lifeStage: menopause category: Energy medicalReviewer: 'Dr Shree Datta, Consultant Obstetrician and Gynaecologist ' reviewerId: 'https://blog.bloume.com/menopause/medical-board.md#dr-shree-datta' lastUpdated: '2026-08-16' primarySource: 'Sleep and sleep disorders in the menopausal transition' wordCount: 1239 readTimeInSeconds: 309.75 --- # What Causes Fatigue In Menopause? The bone-deep tiredness that can settle in during menopause is a different thing from ordinary tiredness after a poor night. It can hang around even when you have rested, and it can blur your concentration, your mood, and how you cope with the day. Several separate causes may be at play, from hormonal shifts and broken sleep to thyroid changes, anaemia, and changes in how your body handles energy. Working out which one applies to you is the first step toward the right support. **Q: Is fatigue a recognised symptom of menopause?** A: Yes. The kind of deep physical and mental exhaustion that rest does not fix is a well-known part of menopause. It can come straight from the hormonal changes, or from knock-on factors like broken sleep, anaemia, or a thyroid problem. Because the cause can vary, it is worth talking to your GP if fatigue is really affecting your day-to-day life. The exhaustion that can come with menopause has a particular feel to it. It sits heavily even after a full night's sleep, it slows your thinking, and it does not lift the way ordinary tiredness does once you rest. Fatigue is one of the most widely reported experiences during the menopausal transition, though figures vary across studies. This kind of tiredness deserves attention. Several different things can drive it, and working out which one, or which combination, applies to you makes a real difference to the help that is available. ## Hormonal causes of fatigue in menopause A lot of the fatigue that comes with menopause traces back to falling oestrogen and progesterone. Oestrogen helps shape how your body uses energy and steadies your mood, so as it drops, your physical and mental stamina often dip with it. Progesterone has a calming, sleep-supporting effect, and as it falls you may feel more restless or low. Testosterone drops during this time too, and you may notice your motivation and drive fade with it. Testosterone for menopause symptoms in the UK is prescribed off-licence, so it is something to talk through with your GP. Hormone Replacement Therapy (HRT) can ease fatigue by topping up the hormones that have dropped, and by calming symptoms like hot flushes and broken sleep. Whether it suits you depends on your health and your medical history. This is a decision to make with your GP, who can weigh the benefits and risks for you. ## How broken sleep adds to the tiredness Even when the hormonal side of fatigue is mild, broken sleep can pile on top of it. Night sweats, hot flushes, and anxiety can wake you again and again through the night, leaving you with patchy rest that does little to restore your energy. The tiredness you feel the next day comes straight from that broken sleep. Sleep apnoea is worth thinking about if your daytime tiredness is heavy. The risk of sleep apnoea goes up after menopause, and its main sign, ongoing daytime fatigue, is easy to put down to menopause itself when something else is going on. If you snore, wake with headaches, or find that no amount of sleep leaves you feeling rested, raise it with your GP. Sleep apnoea can be looked into and treated. ## Thyroid overlap: when fatigue has a second cause If you are already managing a thyroid condition, the picture gets more tangled. An underactive thyroid, known as hypothyroidism, brings on symptoms that look a lot like menopause: fatigue, weight gain, low mood, and feeling cold. The two can run alongside each other, and the symptoms of one can hide or heighten the symptoms of the other. If your fatigue feels out of step with your other menopausal symptoms, or it is not easing the way you would expect with treatment, it is worth asking your GP to check your thyroid function. Hypothyroidism shows up on a blood test. If it is confirmed, it is treated with a daily levothyroxine tablet, which you can only get on prescription in the UK. Getting your thyroid dose right during menopause can make a real difference to your energy, though you may still need to manage both the thyroid and the hormonal changes side by side. > **INFO**: Thyroid symptoms and menopausal symptoms overlap a lot, and a blood test is how your GP can tell them apart. If you are already taking levothyroxine, mention any new or worsening fatigue at your next review, as your dose may need adjusting. ## Where metabolism and nutrition come in Menopause can change how your body handles energy. This is background rather than a diagnosis, so if you notice your energy dropping in a pattern around eating, it is worth raising with your GP. Heavy or irregular periods during perimenopause can leave you low on iron, and iron deficiency anaemia is a separate, treatable cause of fatigue. The tiredness it brings can feel relentless. A blood test picks it up, and your GP guides the treatment, rather than it being something to sort out with over-the-counter supplements on your own. ## When to seek support If your fatigue is severe, sticks around, or is getting in the way of daily life, that is a reason to see your GP rather than wait it out. A GP can run blood tests to check for hypothyroidism, anaemia, and other things that might be feeding into it, and can talk through whether HRT or other treatments could suit you. If you are noticing these symptoms before the age of 45, with fatigue alongside other menopausal changes, it is especially worth getting checked. Symptoms that start before 45 can point to premature ovarian insufficiency (POI), a separate condition from the usual timing of menopause that needs its own investigation and management. > **WARNING**: See your GP if your fatigue is severe, is not improving, or is taking a real toll on daily life. If your symptoms are starting before age 45, book an appointment sooner rather than later. Blood tests can pick up or rule out thyroid problems, anaemia, and other treatable causes. **Q: Is fatigue a recognised symptom of menopause?** Yes. The kind of deep physical and mental exhaustion that rest does not fix is a well-known part of menopause. It can come straight from the hormonal changes, or from knock-on factors like broken sleep, anaemia, or a thyroid problem. Because the cause can vary, it is worth talking to your GP if fatigue is really affecting your day-to-day life. **Q: How can you tell if fatigue is from menopause or from your thyroid?** The symptoms of an underactive thyroid, or hypothyroidism, and menopause overlap a lot. Both can leave you with fatigue, low mood, weight changes, and trouble concentrating. A blood test is the only reliable way to tell them apart. If you already have a thyroid condition, your GP can check whether it is well controlled and whether the hormonal changes are adding to how you feel. Both can be going on at once, and you may need to manage them side by side. **Q: Can HRT help with fatigue in menopause?** HRT can ease fatigue by topping up the hormones that have dropped, and it can improve your sleep by calming hot flushes and night sweats. It does not work for everyone, and whether it suits you depends on your health and medical history. Talk to your GP to understand whether HRT is a good option for you, and what the benefits and risks look like in your case. **Q: Could anaemia be causing fatigue during perimenopause?** Yes. Heavy or irregular periods, which are common in perimenopause, can lead to iron deficiency anaemia. Anaemia brings a particular, persistent kind of tiredness, and a blood test picks it up. Your GP can confirm it and advise on the right treatment. It is best not to start iron supplements before you have a confirmed diagnosis, as your iron levels need checking properly first. **Q: When should you see a GP about fatigue in menopause?** See your GP if your fatigue is severe, has not improved, or is getting in the way of daily life. It is also worth booking in if you are noticing menopausal symptoms before the age of 45, since this can point to premature ovarian insufficiency (POI), which needs its own investigation. Your GP can run the relevant blood tests and talk through treatment options that suit you. ### Clinical Sources - [Sleep and sleep disorders in the menopausal transition](https://pmc.ncbi.nlm.nih.gov/articles/PMC6092036/) - [Menopause Fatigue](https://www.menopausecare.co.uk/blog/menopause-fatigue) - [Symptoms of menopause and perimenopause](https://www.nhs.uk/conditions/menopause-and-perimenopause/symptoms/) - [Sleep Problems and Menopause: What's the Connection?](https://www.hopkinsmedicine.org/health/wellness-and-prevention/how-does-menopause-affect-my-sleep) - [Sleep and sleep disorders in the menopausal transition](https://pmc.ncbi.nlm.nih.gov/articles/PMC6092036/) - [Underactive thyroid (hypothyroidism) – NHS](https://www.nhs.uk/conditions/underactive-thyroid-hypothyroidism/) - [Underactive thyroid (hypothyroidism) – NHS](https://www.nhs.uk/conditions/underactive-thyroid-hypothyroidism/) - [The Metabolic Syndrome of Menopause: A New Framework for Midlife Health](https://thepauselife.com/blogs/the-pause-blog/the-metabolic-syndrome-of-menopause-a-new-framework-for-midlife-health) - [Fatigue & Menopause Leaflet](https://www.nhsemployers.org/system/files/2022-03/Fatigue%20%26%20Menopause%20Leaflet.pdf) - [Symptoms of menopause and perimenopause](https://www.nhs.uk/conditions/menopause-and-perimenopause/symptoms/) --- Reviewed by Dr Shree Datta, Consultant Obstetrician and Gynaecologist | [Medical Board](https://blog.bloume.com/menopause/medical-board.md) | August 2026