Heart Palpitations in Perimenopause: Why Your Heart Is Fluttering and When to Get It Checked
What's Actually Going On
Estrogen doesn't just act on your reproductive system. It has receptors throughout your body, including your heart, blood vessels, and the part of your nervous system that regulates your heart rate.
During perimenopause, estrogen doesn't decline in a neat, gentle line. It surges and dips unpredictably, and your autonomic nervous system, the one that runs the "automatic" functions like heart rate, can become more reactive as a result. The outcome is that your heart may race, pound, flutter, or skip a beat, often with no obvious trigger.
Palpitations often show up alongside hot flushes and night sweats, because the same hormonal shifts affect temperature regulation and heart rate. Many women notice them at night or in the early hours, when hormone levels and stress hormones are also shifting.
Other Things That Can Make It Worse
Hormones are rarely the whole story. Several other factors can amplify palpitations at this stage of life:
Broken sleep. Poor sleep puts your nervous system on high alert, and a stressed nervous system means a jumpier heart.
Blood sugar dips. Skipping meals or going too long without eating can trigger an adrenaline response, and adrenaline makes your heart race.
Caffeine and alcohol. Many women find they suddenly can't tolerate their usual coffee or evening glass of wine in perimenopause. Both can set off palpitations.
Low iron or ferritin. Heavy or erratic periods are common in perimenopause, and low iron stores can cause a racing heart, breathlessness, and fatigue.
Thyroid changes. An overactive thyroid can cause palpitations, and thyroid issues are more common in midlife. It's worth ruling out.
Magnesium and other nutrient status. Magnesium plays a role in normal heart rhythm and muscle function, and many women are running low.
Stress and anxiety. Anxiety can cause palpitations, and palpitations can cause anxiety. It's a loop, and hormonal shifts make it easier to fall into.
When to See Your Doctor
This is the important part. Palpitations in perimenopause are common and usually harmless, but you should never assume that without getting them checked, particularly because cardiovascular risk rises after menopause.
Book an appointment with your GP if your palpitations are new, frequent, or worrying you. Ask about:
An ECG to look at your heart rhythm
Blood tests including ferritin (iron stores), thyroid function, and electrolytes
A blood pressure check
A heart monitor if your symptoms come and go, so they can catch an episode
Seek urgent medical help (call 111 in NZ) if palpitations come with chest pain or pressure, shortness of breath, dizziness, fainting, or pain spreading to your arm, neck, or jaw. Don't wait, and don't talk yourself out of it.
What Can Help
Once your doctor has ruled out anything more serious, there's a lot you can do to calm things down.
Eat regularly and balance your blood sugar. Include protein with every meal and don't leave long gaps. A blood sugar dip is a common and easily fixed trigger.
Look at your caffeine and alcohol. You don't necessarily have to give them up forever. Try cutting back for a few weeks and see whether your symptoms shift. Many women are surprised.
Support your nervous system. Slow breathing, a short walk after meals, and a consistent wind-down routine all help. Even five minutes of slow breaths, with a longer exhale than inhale, can settle a racing heart.
Prioritise sleep. It's easier said than done in perimenopause, but improving sleep often improves palpitations.
Check your nutrient levels. If your ferritin is low, it needs addressing. Magnesium-rich foods like leafy greens, pumpkin seeds, and legumes are a good place to start, and a practitioner can guide you on whether supplementation is right for you.
Talk to your doctor about HRT. For some women, stabilising hormone levels with HRT reduces palpitations. It isn't right for everyone, but it's worth discussing, especially if you have other symptoms too.
Get support from someone who understands. Working with a practitioner who knows the perimenopause landscape can help you untangle what's hormonal, what's nutritional, and what needs a closer look.
Why Guessing Doesn't Work
Here's the tricky bit. Palpitations can be hormonal, nutritional, thyroid-related, stress-driven, or a mix of all four. Trying to work out which is which on your own, at 2 am, with Dr Google, is exhausting and rarely gets you anywhere.
That's exactly what I do in clinic. Together we look at your symptoms, your nutrition, your lifestyle and the tests worth asking your doctor for, so you leave with a clear plan instead of a list of maybes.
[Book a consultation with me here ]
The Bigger Picture
A racing or fluttering heart can feel deeply unsettling, and it's easy to spiral into worry, which then makes it worse. But understanding what's behind it takes away much of the fear.
Your body isn't malfunctioning. It's adapting to a major hormonal shift, and sometimes the heart is one of the places that shift becomes visible. Get it checked, look after the basics, and be kind to yourself while your body finds its new rhythm.
And if you'd like company on the journey, come and join us in The Pause Room, our supportive community for women in perimenopause and menopause. It's where you can ask the questions you'd rather not ask anywhere else, and hear "me too" from women who really do get it.
Rene, XO
Clinical Nutritionist, Medical Herbalist, and woman who's walking this path too.
This article is for general information and isn't a substitute for medical advice. If you're worried about your heart, please see your doctor.