Ask any woman what she is most afraid of, health-wise, and she will almost certainly say cancer. Breast cancer, probably. It is the disease we are taught to fear, the one we screen for, run for, wear ribbons for.
But it is not what kills most of us. Heart disease is the number one cause of death among women worldwide. In the United Kingdom, coronary heart disease kills twice as many women as breast cancer every year. And yet most women do not know this. I did not know this, not really, until I started looking.
What I found made me angry. Not at the disease — you cannot be angry at biology — but at the system around it. Because the reason so many women die of heart disease is not that we are more vulnerable to it. It is that the entire medical framework for recognising it, diagnosing it, and treating it was built around men.
The wrong symptoms.
Here is what a heart attack looks like in the movies: a man clutches his chest, staggers, and collapses. Crushing pain on the left side. Arm goes numb. Everyone around him knows exactly what is happening.
Here is what a heart attack can look like in a woman: jaw pain. Nausea. Exhaustion so heavy you cannot stand up. Pain in the back, between the shoulder blades. A sudden wave of anxiety that feels like a panic attack. Shortness of breath. Indigestion that will not go away.
These are not rare exceptions. A major analysis of nearly 900,000 heart attack patients found that women were twelve percent less likely to present with the classic symptoms — the chest pain and left-arm pain that everyone is taught to watch for. They were twice as likely to present with nausea. Thirty-two percent more likely to present with fatigue and malaise.
Women were twice as likely as men to be diagnosed with a panic attack in the twenty-four hours before their heart attack.Komodo Health analysis, 2022 · ~900,000 MI patients
Read that again. Twice as likely to be told it was panic. While their heart was failing.
The anxious female.
There is a phrase that appears in medical records more often than it should: anxious female. A woman arrives at the emergency department with chest discomfort, breathlessness, a sense that something is terribly wrong. She does not match the textbook picture — the textbook that was written from studies of men. So she is reassured. Given something for the anxiety. Sent home.
Sometimes she comes back. Sometimes she does not make it back.
This is not an anecdote. The data shows it clearly. After a heart attack, women were sixty percent less likely to receive clot-dissolving therapy and seventy percent less likely to receive a stent or angioplasty within forty-eight hours compared to men. They are less likely to receive CPR from bystanders. Younger women have worse outcomes than men of the same age.
The system does not intend to fail women. But intention does not matter when the result is the same.
Built on the wrong data.
For decades, cardiovascular research was conducted almost exclusively on men. A 1977 guideline from the United States FDA actively discouraged including women of childbearing age in clinical trials, out of concern for potential pregnancy. The rule was well-intentioned. Its consequence was catastrophic: an entire generation of heart disease knowledge — the drugs, the dosages, the diagnostic criteria, the risk calculators — was developed without women in the room.
That guideline was reversed in the 1990s. The NIH began requiring the inclusion of women in federally funded research. But the gap has not closed. A review of more than 700 heart failure trials between 2010 and 2020 found that women accounted for only twenty-six percent of participants. Across 740 cardiovascular trials enrolling over 860,000 adults, the figure was thirty-eight percent.
This means that the treatments women receive today were still, in large part, tested on men. The doses were calibrated for male bodies. The warning signs were catalogued from male symptoms. And when a woman walks into an emergency room with jaw pain and nausea instead of chest-clutching collapse, the system does not recognise her.
The change no one warns you about.
There is a moment in every woman's life when her cardiovascular risk changes dramatically, and most women do not know it is happening. It is called menopause. And the transition leading up to it — perimenopause, which can begin in the early forties — is when the protection starts to withdraw.
Estrogen is one of the most powerful cardioprotective mechanisms women have. It keeps arteries flexible. It helps regulate cholesterol, favouring the protective kind. It has anti-inflammatory effects on blood vessel walls. For most of a woman's adult life, this hormonal shield is one of the reasons her heart disease risk is lower than a man's.
Then it disappears. Estrogen levels drop during perimenopause and fall sharply at menopause. Within about ten years, a woman's cardiovascular risk approaches a man's. The shield is gone, and nothing in the system replaces it — not the screening, not the awareness, not the conversation with her doctor.
And here is the cruelty of it: the symptoms of perimenopause overlap almost perfectly with the atypical cardiac symptoms I just described. Palpitations. Breathlessness. Chest tightness. Fatigue. Anxiety. A woman in her late forties walks into a clinic with these complaints, and what does the system hear? Menopause. Not her heart. Never her heart. She is in the transition, so everything gets filed under hormones — and the thing that might actually be killing her goes unheard.
The same system that dismisses young women's symptoms as anxiety dismisses older women's symptoms as menopause. The diagnosis changes. The failure does not.
This does not mean menopause causes heart disease. It means that the protection was always temporary, and no one told us it had an expiry date. It means that the forties and fifties — the years when women are navigating one of the most significant biological transitions of their lives — are precisely the years when cardiovascular vigilance matters most. And it means that every hot flush and racing heart deserves a doctor who asks: is this hormones, or is this something else?
What I want women to know.
I am not a doctor. I write about food and movement and sleep — the quiet things. But this is connected to everything I believe about health, because it is the same problem wearing different clothes: a system that treats symptoms instead of seeing the whole person.
If you are a woman, here is what I want you to know:
Your symptoms are real. Jaw pain is real. Exhaustion is real. The feeling that something is wrong — that nameless dread that does not match any diagram on the wall — is real. You are not anxious. You are not imagining it. And if a doctor tells you it is stress, you are allowed to say: test me anyway.
Your risk is real. Heart disease does not care that you are young, or fit, or female. It is not a man's disease. It never was. It was studied as one, which is a very different thing.
Prevention is real. And here the circle comes back. Movement, real food, sleep, stress management, time outside — the same six things I wrote about before. They are not a cure for everything, but they are the foundation that reduces your risk of the thing most likely to kill you. And unlike the diagnostic system, they do not have a gender bias.
The most dangerous symptom of heart disease in women is the assumption that it cannot happen to them.
A quiet request.
Share this with a woman you care about. Not to frighten her — to empower her. Because the single most effective intervention against misdiagnosis is a patient who knows her own body well enough to insist.
The system will catch up eventually. The research will include us. The textbooks will be rewritten. The emergency departments will learn to listen for jaw pain and nausea and the quiet sense that something is not right.
Until then, we have to speak for ourselves. Quietly, if that is who we are. But clearly. And without apology.
The heart does not care about the textbook. It asks only to be heard.