Blood Sugar Clues to Heart Health

Recent research from Boston University School of Medicine published in Diabetes Care reveals that continuous glucose monitoring (CGM) can uncover hidden blood sugar fluctuations in individuals without diabetes. Analyzing approximately 1,300 adults from the Framingham Heart Study, researchers found that higher average glucose levels and increased time spent above 140 milligrams per deciliter (mg/dL) are associated with a greater likelihood of high blood pressure and altered cholesterol levels. The study emphasizes that standard clinical measures like fasting plasma glucose (FPG) and hemoglobin A1c (HbA1c) fail to capture daily glucose variability. Lead author Bahar Bakhshi and corresponding author Nicole Spartano note that tracking these temporal patterns allows for phenotyping individuals across the blood sugar continuum, helping identify early or intermittent dysglycemia before overt disease develops. While the cross-sectional design cannot establish definitive predictive causation for future cardiovascular disease, emerging longitudinal studies suggest a correlation between prolonged blood sugar elevations and subsequent cardiometabolic outcomes. This approach opens new pathways for early risk stratification and targeted interventions in metabolic and cardiac health. Healthcare researchers and clinicians can leverage continuous monitoring technologies to study subclinical metabolic dysfunction. Future investigations will determine how incorporating CGM metrics into standard risk assessments can improve prevention strategies for cardiovascular disease and type 2 diabetes.