A groundbreaking study by researchers at the University of Leicester has uncovered that women with type 2 diabetes are nearly twice as likely as men to experience hidden heart damage, even without symptoms. Published in the Journal of Cardiovascular Magnetic Resonance, the research highlights the prevalence of coronary microvascular dysfunction (CMD)—a silent condition impairing blood flow in the heart’s smallest vessels—and calls for sex-specific approaches to early detection and prevention.
The study analyzed advanced MRI scans from four studies at the NIHR Leicester Biomedical Research Centre (BRC). Results showed 46% of women with type 2 diabetes had signs of CMD, compared to only 26% of men. Notably, all participants were asymptomatic, with no prior heart disease diagnoses.
Key findings revealed sex-specific risk factors: Higher body weight (BMI) was strongly linked to CMD in women, while elevated blood pressure played a larger role in men. According to lead investigator Professor Gerry McCann, “These early warning signs are missed in routine checks, disproportionately affecting women.”
Dr. Gaurav Gulsin, a co-author, emphasized the need for tailored interventions: “Weight management for women and blood pressure control for men could mitigate early heart damage before it progresses to heart failure.”
The study also showcased the success of cross-disciplinary collaboration among cardiovascular, diabetes, and lifestyle research teams at the NIHR Leicester BRC. Professor Melanie Davies CBE, Director of the BRC, praised the teamwork: “This is how we spot disease earlier and improve patient outcomes.”
The findings underscore the importance of sex-specific cardiovascular risk assessments and early interventions for people with type 2 diabetes. By addressing distinct risk factors like BMI and blood pressure, healthcare providers could potentially reduce the burden of heart disease in this high-risk population. Future research will explore targeted prevention strategies to curb the progression of CMD.
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