A new study published in Hypertension, a peer-reviewed journal of the American Heart Association, indicates that the midlife rise in pulse pressure—a key indicator of aortic stiffness and cardiovascular risk—begins about two decades before menopause, challenging the long-held assumption that menopause is the primary trigger. The research, based on data from the Framingham Heart Study, suggests that vascular aging in women may start much earlier than previously thought, with significant implications for early detection and prevention of heart disease, dementia, and kidney disease.
Pulse pressure, the difference between systolic and diastolic blood pressure readings, is influenced by the stiffness and diameter of the aorta, the body's largest artery. Between early adulthood and midlife, pulse pressure typically decreases as the aorta widens, but after midlife, it rises as the aorta stiffens. This transition occurs about a decade earlier in women (late 30s) than in men (late 40s), and the increase is faster in women, leading to higher average pulse pressure after age 60. The study found that the timing of menopause—whether early, late, or average—had no influence on when pulse pressure reached its lowest point, which occurred up to 20 years before the final menstrual period.
“Many people believe that the change in pulse pressure is linked to the hormonal shifts caused by menopause. Here, we are evaluating whether the timing of this change, from falling to rising pulse pressure, is connected to menopause timing in a long-term study,” said study senior author Gary F. Mitchell, M.D., a longstanding NIH-funded investigator with the Framingham Heart Study and president of Cardiovascular Engineering, Inc. “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.”
The study analyzed 6,760 women and 3,248 men from the Framingham Heart Study, a multi-generational cohort. Women were grouped by self-reported age at menopause: premenopausal, early menopause, average menopause, and late menopause. The findings highlight that wide pulse pressure is an independent risk factor for cardiovascular disease, dementia, and kidney disease, and may make high blood pressure less responsive to standard treatments.
“Healthcare professionals should definitely consider pulse pressure in middle-aged and older patients – especially women – with high blood pressure,” Mitchell said. “Because women’s overall heart disease risk is lower, they are often told that a blood pressure that is ‘borderline’ - for example an upper number of 130 mm Hg - can just be watched. However, women and their doctors should sound the alarm if pulse pressure is higher than 60 mm Hg [such as 130/70 mm Hg] and track it over time to see if pulse pressure is rising.”
The implications are significant: current clinical guidelines do not include pulse pressure in blood pressure management, but this study suggests it should be. Greater attention to pulse pressure could guide tailored treatment approaches, as high blood pressure with wide pulse pressure is less likely to respond to usual therapies. The American Heart Association has previously highlighted the menopause transition as a window of opportunity for heart disease prevention, but this research pushes that window even earlier.
“We shouldn’t wait until menopause to start thinking about cardiovascular health. 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,” said 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. El Khoudary was not involved in the current study.
The study is observational and cannot prove cause and effect, and it relied on self-reported menopause age rather than hormone measurements. Most participants were of white European descent, so results may not generalize to other racial or ethnic groups. The research was supported by the National Heart, Lung, and Blood Institute of the National Institutes of Health and led by Boston University. The findings underscore the need for earlier cardiovascular risk assessment in women and may lead to revised clinical guidelines that incorporate pulse pressure as a critical metric for heart health.
