Why Is My Heart Racing at Night?

THE QUESTION

Why is my heart racing at night? Is it really just hormones?

THE SIMPLE ANSWER

Palpitations can feel like racing, pounding, fluttering, or skipped beats. They are commonly reported during the menopause transition, and they may feel especially obvious when the room is quiet and you are trying to sleep.

But not every palpitation is caused by hormones. The rhythm, timing, duration, other symptoms, medicines, caffeine or alcohol, sleep, thyroid health, anemia, illness, and stress can all change the meaning.

WHAT WE KNOW

The SWAN study followed women across the menopause transition and found that reports of heart pounding or racing were common from early perimenopause into early postmenopause. The study also found different patterns over time, which is another reason not to give every woman one explanation.

The best way to understand a palpitation is to connect the feeling to the rhythm that was actually happening. A short office ECG records only a brief moment. If episodes come and go, a clinician may decide that a longer rhythm monitor is useful.

WHAT WE DO NOT KNOW YET

Research has not fully explained why palpitations increase for some women around menopause or which menopause treatments reliably help them. The SWAN study recorded what women felt, not the heart rhythm on an ECG, so it could not tell whether each report was an arrhythmia. A symptom alone cannot show whether the rhythm is harmless or needs treatment.

That does not mean every episode is dangerous. It means the pattern matters: when it happens, how long it lasts, what the pulse feels like, and what else you feel at the same time.

WHY THIS MATTERS TO YOUR HEART

Most palpitations are not an emergency, but new or changing episodes deserve attention. Seek urgent medical help if they come with chest pain, shortness of breath, fainting or nearly fainting, or new weakness or trouble speaking.

For episodes that are not urgent, a simple record of time, duration, pulse, possible triggers, and other symptoms can help your clinician match the right question to the right test.

ONE QUESTION TO ASK YOUR CLINICIAN

These episodes are new for me and happen at night. What details should I track, and do we need to capture my rhythm while one is happening?