Why this matters
Heart disease remains the leading cause of death among women.
So how do we get better at identifying cardiovascular risk in women?
We need better ways to measure risk — including biomarkers, measurable biological clues such as substances found in blood — and thresholds for interpreting them that are validated specifically in women.
But even among women, those measures may not mean the same thing across every reproductive life stage.
That is where our question begins.
The question
A blood test already used to understand iron status may hold information about cardiovascular health that we have not fully explored.
Ferritin is a biomarker used to assess the body’s iron stores. Using existing data from the Women’s Health Initiative, we asked whether this familiar and relatively accessible biomarker might also tell us something about cardiovascular health among women in postmenopause.
What we observed
Among older postmenopausal women, lower ferritin was associated with a greater chance of heart attack, stroke, heart failure, and related cardiovascular events.
But the relationship was not a straight line.
Why reproductive stage matters
A biomarker may not carry the same meaning across reproductive life stages.
Women are not one uniform population.
What this signal tells us
This was a proof of concept using data that already existed. No new data collection or study-specific funding was required. The analysis does not provide a definitive answer; it identifies a direction worth investigating more deeply.
The finding is not the finish line. It tells us where it may be worth looking next.
Where we should invest next
Ferritin is already measurable, relatively accessible, and inexpensive. Findings like this can help identify which existing biomarkers and questions deserve deeper validation and research investment.
Accessible Practical Testable
Sometimes innovation means getting creative with what we already have.
Research Status
This is observational research. It does not establish causation, and the findings require replication and further validation.
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Presented
AHA EPI|Lifestyle Scientific Sessions 2026
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Published Abstract
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In Peer Review
Full manuscript under peer review.