Heart palpitations

Palpitations are one of the most under-named midlife hormone symptoms. Most people are sent straight to a cardiologist (rightly), get a clean bill of health (good), and are then sent home with no explanation (the part we can fix). The hormone story usually wasn't on the table.

Estrogen and progesterone modulate the autonomic nervous system, the heart's electrical conduction, and vascular tone. As they swing, so does the rhythm.

Estrogen swings change autonomic tone. Estrogen has a calming effect on the sympathetic nervous system. As levels rise and fall unpredictably in perimenopause, the balance between sympathetic (fight-or-flight) and parasympathetic (rest) tone shifts, and the heart feels every shift.

Palpitations often travel with hot flashes. A vasomotor episode is a sympathetic surge. The heart rate jumps 8 to 16 beats per minute during a hot flash and can stay elevated for several minutes after. If your palpitations cluster around flushes, that's the mechanism.

The 3 a.m. wake-up cluster. Many people describe waking at 3 a.m. with a thudding heart, often after a night sweat. Cortisol naturally rises in the second half of the night; in perimenopause that climb is steeper and the heart goes along for the ride.

Anxiety and palpitations feed each other. A skipped beat is alarming. The fear amplifies the next one. A loop forms. Naming the loop usually shrinks it; the palpitations are still hormonal, the spiralling is the part you can interrupt.

Thyroid and iron deserve a check. Anemia and thyroid disease can cause palpitations. Your symptoms and history guide whether blood tests would help; there isn't a required iron and thyroid panel for every episode.

Caffeine, alcohol and stimulants hit harder. The same coffee that didn't bother you at 38 can now buy you an afternoon of skipped beats. Alcohol is a common trigger, especially the second drink and especially before bed. Decongestants and some asthma inhalers do the same.

Most palpitations settle when the autonomic system is settled and the obvious provokers are removed. The cardiac workup comes first; everything below assumes a clean baseline.

Get the baseline cardiac check, then come back to hormones. An ECG may help identify the cause. If it doesn't capture an intermittent episode, ask whether longer monitoring would help and which duration fits the pattern. A wearable recording can add information, but doesn't replace medical assessment.

Slow exhale, twice as long as the inhale. A 4-second inhale, 8-second exhale, repeated for 90 seconds, activates the vagus nerve and drops heart rate within a couple of cycles. It's the single most reliable in-the-moment tool. Not a cure; a circuit-breaker.

Splash cold water on the face during an episode. The mammalian dive reflex slows the heart by 10 to 25 per cent within seconds. Sounds gimmicky, works. A cold flannel across the eyes and forehead does the same.

MHT helps for many. When palpitations cluster with hot flashes and night sweats, treating the vasomotor symptoms with menopausal hormone therapy often quiets the heart symptoms too. Not a primary indication on its own, but a real downstream benefit worth raising with a menopause-trained doctor.

Cut the obvious provokers for two weeks. Coffee to one cup before noon. No alcohol after 6 p.m. (or none at all, briefly). No decongestants. If the palpitations halve, you've found a lever.

Treat the night sweats so the 3 a.m. thud has nowhere to start. Cool bedroom (16–18 °C), wicking sleepwear, a fan, magnesium glycinate at night for some. Anything that prevents the sweat-then-cortisol-spike sequence reduces the night-time palpitation cluster.

Know that ectopic beats feel scarier than they are. A 'skipped' beat is usually an early beat followed by a longer-than-normal pause; the next beat is then bigger, which is what you feel. In a structurally normal heart, occasional ectopics aren't dangerous. Knowing that takes a real edge off.