About one-third of adults with type 2 diabetes may have undetected cardiovascular disease (CVD), which significantly increases their risk of morbidity and mortality1 . Cardiovascular disease remains the leading cause of death among people with type 2 diabetes, highlighting the urgent need for early detection and comprehensive management2 . Despite advances in treatment, many patients with type 2 diabetes do not achieve optimal control of cardiovascular risk factors, contributing to the high burden of heart disease in this population2 .
Diabetes and Cardiovascular Disease
Type 2 diabetes mellitus (T2DM) is a major public health problem worldwide and is closely linked to cardiovascular, cerebrovascular, and renal diseases3 . People living with T2DM have a higher risk of developing and dying from cardiovascular diseases such as myocardial infarction, stroke, and heart failure compared to those without diabetes4 . This increased risk is due to multiple metabolic abnormalities including dyslipidemia (abnormal cholesterol levels) and hypertension (high blood pressure) that promote atherosclerosis, the buildup of plaques in arteries5 .
Cardiovascular disease is the principal cause of death in individuals with type 2 diabetes, necessitating early identification and treatment to reduce complications6 . Patients with T2DM are also at elevated risk of developing hypertension, which further increases cardiovascular risk7 . Moreover, diabetic cardiac autonomic neuropathy, affecting up to one-third of patients, can cause abnormalities in heart rate and vascular function, leading to exercise intolerance, asymptomatic ischemia, and silent myocardial infarction8 .
The pathophysiology linking diabetes to cardiovascular disease involves insulin resistance and obesity-related metabolic disturbances that accelerate atherosclerosis10 . Visceral obesity, even in normal-weight individuals with T2DM, is associated with a higher 10-year risk of atherosclerotic cardiovascular events11 . These metabolic changes contribute to coronary artery disease, stroke, and heart failure, which are common cardiovascular complications in diabetes5 .
“Diabetes is an important risk factor for cardiovascular disease (CVD). People living with diabetes, especially those with type 2 diabetes mellitus (T2DM), have a higher risk of developing and dying of cardiovascular diseases.”
— Jan Borén, University of Gothenburg4
Heart Disease Risk in Type 2 Diabetes
Patients with type 2 diabetes have a 1.5 to 2-fold higher risk of developing cardiovascular disease compared to non-diabetic individuals12 . Heart disease remains a major cause of morbidity and mortality in this population, with classic risk markers such as elevated low-density lipoprotein (LDL) cholesterol, high blood pressure, smoking, elevated triglycerides, and low high-density lipoprotein (HDL) cholesterol playing important roles7 . However, the excess prevalence of heart disease in diabetes is not fully explained by these traditional risk factors alone7 .
One-third of adults with type 2 diabetes in the United States may have symptomless or undetected cardiovascular disease1 . These individuals often have elevated levels of cardiac biomarkers such as high-sensitivity cardiac troponin T (hs-cTnT) and N-terminal pro-B-type natriuretic peptide (NT-proBNP), which indicate heart injury and stress and are associated with increased risk of heart failure, coronary heart disease, and death1 . Mildly elevated concentrations of these proteins may serve as early warning signs of structural and functional changes in the heart1 .
Cardiovascular disease is the leading cause of death and disability among people with Type 2 diabetes. Fewer than 1 in 5 adults with Type 2 diabetes who are not diagnosed with heart disease have healthy levels for blood sugar, blood pressure, and cholesterol and do not smoke. Early detection and comprehensive management of cardiovascular risk factors are critical to improving survival and quality of life1 2.
Screening for asymptomatic coronary artery disease in type 2 diabetes remains controversial due to the lack of clear guidelines and concerns about cost-effectiveness13 . Current guidelines prioritize comprehensive risk factor management over routine screening in asymptomatic patients14 . This includes:
- Glycemic control to maintain blood sugar levels within target ranges14 .
- Lipid management to reduce LDL cholesterol and triglycerides14 .
- Blood pressure control to prevent hypertension-related damage14 .
- Lifestyle interventions such as diet, exercise, and smoking cessation14 .
💡 Did You Know?
About a third of American adults with type 2 diabetes may have undetected CVD9 .
Glucose-lowering therapies with proven cardiovascular benefits, including sodium-glucose cotransporter-2 (SGLT2) inhibitors and glucagon-like peptide-1 (GLP-1) receptor agonists, are recommended for patients with T2DM and cardiovascular risk15 . These agents have been shown to reduce the risk of heart disease, stroke, heart failure, and kidney disease2 .
“Many people with Type 2 diabetes who have not had a heart attack or a history of cardiovascular disease are at high risk for cardiovascular complications.”
— Elizabeth Selvin, Ph.D., M.P.H., Johns Hopkins Bloomberg School of Public Health1
A personalized treatment approach focusing on cardiovascular risk factors and obesity management improves outcomes in T2DM14 . Multidisciplinary care models involving endocrinologists, cardiologists, primary care providers, and diabetes educators enhance cardiovascular risk management and patient adherence14 .
- Elevated LDL cholesterol and triglycerides7 .
- High blood pressure and hypertension7 .
- Smoking and lifestyle factors7 .
- Obesity, especially visceral fat accumulation11 .
- Elevated cardiac biomarkers (hs-cTnT, NT-proBNP) indicating subclinical heart damage1 .
- Use of SGLT2 inhibitors and GLP-1 receptor agonists for cardiovascular protection15 2.
