You would be able to tell if your mother, your wife or your sister was having a heart attack, wouldn’t you? They’d have chest and left arm pains, maybe clutch their breast. Except they probably wouldn’t. Those are male symptoms — a “Hollywood heart attack”. Women, by comparison, tend to experience stomach pain, breathlessness, nausea and fatigue.

That’s why they are up to 60 per cent more likely to be misdiagnosed, which can lead to a preventable death — not great, when poorer women are already 25 per cent more likely to be suffering heart disease than men. Yet in a world designed around men, lots of us are unaware of vital facts such as this.

Welcome to the gender data gap, where unintended male