Contradicting conventional wisdom, a new study published in Hypertension suggests that menopause may not be the primary driver of increased aortic stiffness and pulse pressure in women after midlife. The research, part of the long-running Framingham Heart Study, found that pulse pressure begins to rise about two decades before menopause, indicating that vascular aging starts much earlier than previously believed.
The aorta, the body's largest artery, delivers oxygen-rich blood from the heart to other organs. As people age, the aortic walls stiffen, leading to a widening pulse pressure—the difference between systolic and diastolic blood pressure readings. A wider pulse pressure means the heart works harder and can damage small vessels in the brain and kidneys. While high blood pressure is a known risk factor for cardiovascular disease, wide pulse pressure is increasingly recognized as an independent risk factor for heart disease, dementia, and kidney disease.
The study analyzed data from 6,760 women and 3,248 men in the Framingham Heart Study over 14 years. Researchers found that pulse pressure reached its lowest point and began rising in women in their late 30s, compared to late 40s in men. Importantly, the timing of menopause—whether early, average, or late—had no influence on when this transition occurred. "To our huge surprise, our results suggest that factors other than the timing of the final menstrual period were likely involved in the accelerated increase in pulse pressure in women after midlife," said senior author Gary F. Mitchell, M.D.
These findings have significant implications for clinical practice. Pulse pressure is not currently included in blood pressure management guidelines, but the study authors argue it should be. "Healthcare professionals should definitely consider pulse pressure in middle-aged and older patients – especially women – with high blood pressure," Mitchell said. He noted that women are often told that borderline high blood pressure can be monitored, but a pulse pressure higher than 60 mm Hg (e.g., 130/70 mm Hg) should raise concern and be tracked over time.
Greater attention to pulse pressure could also guide treatment. High blood pressure with a wide pulse pressure is less likely to respond to standard medications, so tailored approaches are important. Samar R. El Khoudary, Ph.D., M.P.H., FAHA, who chaired the writing group for a 2020 American Heart Association scientific statement on the menopause transition, emphasized that cardiovascular health should be a focus long before menopause. "We shouldn’t wait until menopause to start thinking about cardiovascular health," she said. "By the time a woman reaches her final menstrual period, vascular changes may already have been underway for years. Midlife is an opportunity to identify cardiovascular risk early and intervene before disease develops."
The study's limitations include its observational design, reliance on self-reported menopause age, and a predominantly white European descent population, so results may not apply to other racial or ethnic groups. The research was supported by the National Heart, Lung, and Blood Institute and led by Boston University. The findings underscore the need for earlier screening and personalized management of cardiovascular risk in women.
