Medically Reviewed By
Dr. Ch. Srujith, MBBS, MD (General Medicine)
General Physician & Diabetologist | 15+ Years Experience
View Doctor Profile →Diabetes and heart disease are closely connected. Having diabetes increases the risk of cardiovascular disease, including coronary artery disease, heart attack, stroke, peripheral artery disease, and heart failure. The good news is that many of the factors that increase cardiovascular risk can be addressed through diabetes management, blood-pressure control, cholesterol management, physical activity, healthy eating, smoking cessation, and appropriate medical treatment.
Quick answer: Diabetes can increase cardiovascular risk because persistently elevated blood glucose can contribute to blood-vessel damage, while high blood pressure, abnormal cholesterol, obesity, smoking, and other factors can add to that risk. Adults with diabetes are nearly twice as likely to have heart disease or stroke as adults without diabetes, according to NIDDK.
Table of Contents
What Is the Link Between Diabetes and Heart Disease?
Diabetes affects much more than blood sugar.
Over time, diabetes can contribute to changes in blood vessels and increase the likelihood of other cardiovascular risk factors, including high blood pressure and abnormal cholesterol. Together, these factors can promote atherosclerosis, in which plaque builds up inside arteries.
When coronary arteries become narrowed, blood flow to the heart can decrease. This can contribute to coronary artery disease and heart attack. Diabetes is also associated with increased risk of stroke, peripheral artery disease, and heart failure.
The American Diabetes Association’s 2026 Standards identify cardiovascular disease as a major source of illness and death among people with diabetes and emphasize comprehensive management of glucose, blood pressure, lipids, weight, and other cardiovascular risk factors.
7 Essential Ways Diabetes Can Affect Heart Health
1. Diabetes Increases Cardiovascular Risk
People with diabetes have a higher risk of developing heart disease and stroke than people without diabetes.
NIDDK reports that adults with diabetes are nearly twice as likely to have heart disease or stroke compared with adults without diabetes.
Risk can increase further when diabetes occurs alongside:
- High blood pressure
- High LDL cholesterol
- Smoking
- Obesity
- Chronic kidney disease
- Physical inactivity
- A history of cardiovascular disease
The longer a person has diabetes, the more important comprehensive cardiovascular risk management becomes.
2. Diabetes Can Increase the Risk of Coronary Artery Disease
Coronary artery disease (CAD) occurs when plaque builds up in the arteries supplying blood to the heart.
Diabetes can contribute to the cardiovascular environment that promotes atherosclerosis. High blood pressure and abnormal lipid levels can add to the risk.
Possible consequences include:
- Angina
- Heart attack
- Reduced exercise tolerance
- Heart failure
However, having diabetes does not mean that a person will inevitably develop coronary artery disease. Managing modifiable risk factors can substantially improve cardiovascular risk.
3. Diabetes Is Associated With Heart Failure
Heart failure means the heart cannot pump or fill effectively enough to meet the body’s needs.
The 2026 ADA Standards note that heart failure is at least twice as prevalent among people with diabetes compared with people without diabetes. Diabetes can be associated with both heart failure with preserved ejection fraction and heart failure with reduced ejection fraction.
Symptoms may include:
- Shortness of breath
- Fatigue
- Reduced ability to exercise
- Swelling of the legs or ankles
- Rapid weight gain from fluid retention
- Difficulty breathing when lying down
These symptoms can have many causes, so they require medical evaluation rather than self-diagnosis.
Diabetes and Heart Disease Symptoms
One important problem is that cardiovascular disease may not always cause obvious symptoms during its early stages.
Some people with diabetes may have cardiovascular disease without typical symptoms. This is why controlling risk factors and attending routine medical appointments are important.
Possible symptoms of cardiovascular disease include:
- Chest pressure or discomfort
- Shortness of breath
- Unusual fatigue
- Reduced exercise tolerance
- Dizziness or lightheadedness
- Pain or discomfort in the arm, back, neck, jaw, or upper abdomen
- Swelling of the legs or ankles
The ADA does not recommend routine testing for coronary artery disease in asymptomatic people with diabetes when cardiovascular risk factors are appropriately managed. Testing is considered when symptoms, abnormal findings, or other indications suggest cardiovascular disease.
Can Diabetes Cause a Silent Heart Attack?
A heart attack does not always present with dramatic chest pain.
Some people—particularly those with diabetes or nerve-related complications—may have less typical symptoms or may not recognize the seriousness of their symptoms.
Possible heart attack symptoms include:
- Chest pressure, squeezing, fullness, or pain
- Pain or discomfort in the arms
- Back, neck, jaw, or stomach discomfort
- Shortness of breath
- Cold sweating
- Nausea
- Lightheadedness
- Unusual fatigue
Women may experience symptoms such as unusual tiredness, shortness of breath, nausea, or back, shoulder, or jaw discomfort.
If you think you may be having a heart attack, call 911 immediately. Do not wait to see whether symptoms disappear.
Everyday Habits That Increase Diabetes Risk
Diabetes, High Blood Pressure and Heart Disease
High blood pressure is one of the most important cardiovascular risk factors to address in diabetes.
The 2026 ADA Standards recommend individualized blood-pressure goals. For people with diabetes and hypertension, an on-treatment goal of less than 130/80 mmHg, if safely attainable, is recommended; a systolic goal below 120 mmHg is encouraged for people with high cardiovascular or kidney risk.
Treatment decisions should be individualized because age, kidney function, cardiovascular risk, medications, side effects, and other health factors matter.
Do not change blood-pressure medication based on a single home reading without discussing it with your healthcare professional.
Diabetes and Cholesterol
Cholesterol management is another major part of cardiovascular prevention.
The 2026 ADA Standards recommend moderate-intensity statin therapy for people with diabetes aged 40–75 without ASCVD, alongside lifestyle treatment. People in this age group with higher cardiovascular risk may need high-intensity statin therapy to achieve a larger LDL reduction and an LDL goal below 70 mg/dL.
For people with diabetes who already have ASCVD, the ADA recommends high-intensity statin therapy and an LDL goal below 55 mg/dL, with additional lipid-lowering treatment considered when appropriate.
Your cholesterol treatment should be based on your overall cardiovascular risk—not on LDL cholesterol alone.
Does Blood Sugar Control Protect the Heart?
Managing blood glucose is an important part of diabetes care, but heart protection involves more than glucose alone.
The ADA emphasizes addressing multiple cardiovascular risk factors together, including:
- Blood glucose
- Blood pressure
- Cholesterol
- Weight
- Smoking
- Physical activity
- Kidney health
Evidence summarized in the 2026 ADA Standards shows that addressing multiple cardiovascular risk factors together can provide substantial long-term benefits.
This is why diabetes treatment should not focus exclusively on the glucose number.
How to Prevent Type 2 Diabetes
Diabetes Medications That Can Reduce Cardiovascular Risk
For certain people with type 2 diabetes, medication selection now involves cardiovascular and kidney risk in addition to glucose lowering.
The 2026 ADA Standards recommend an SGLT2 inhibitor and/or GLP-1 receptor agonist with demonstrated cardiovascular benefit for people with type 2 diabetes who have established ASCVD or certain high-risk conditions, heart failure, or chronic kidney disease, depending on the individual’s clinical situation. These medications can be recommended independently of whether additional A1C lowering is needed.
For people with type 2 diabetes and established heart failure, an SGLT2 inhibitor with proven benefit is recommended to reduce the risk of worsening heart failure and cardiovascular death.
Important: These medicines are prescription treatments and are not appropriate for everyone. A healthcare professional should determine whether one is suitable.
7 Ways to Protect Your Heart if You Have Diabetes
1. Keep Blood Glucose Within Your Individualized Target
Follow the glucose-management plan developed with your healthcare team.
Avoid trying to achieve an unnecessarily aggressive glucose target on your own. Diabetes targets should be individualized according to factors such as age, health status, treatment, and hypoglycemia risk.
2. Manage Blood Pressure
Have your blood pressure checked regularly.
If you have hypertension, take prescribed medication consistently and discuss your target with your healthcare professional. Blood-pressure treatment is one of the most effective ways to reduce cardiovascular risk.
3. Know Your Cholesterol Levels
Ask your healthcare professional how your LDL cholesterol and overall cardiovascular risk should be managed.
For many adults with diabetes, statin therapy is an important part of cardiovascular prevention.
4. Be Physically Active
Regular physical activity supports cardiovascular health, fitness, weight management, and diabetes management.
Choose activities that are appropriate for your fitness level and medical condition. If you have heart disease, significant neuropathy, foot ulcers, or other complications, ask your healthcare team about an appropriate exercise plan.
5. Follow a Heart-Healthy Eating Pattern
A heart-friendly diabetes eating pattern can emphasize:
- Vegetables
- Fruits in appropriate portions
- Beans and legumes
- Whole grains when appropriate
- Nuts and seeds
- Fish and other lean protein sources
- Unsaturated fats
It can also reduce excessive intake of highly processed foods, added sugars, sodium, and saturated fats.
There is no single diet that works for everyone with diabetes. The most useful approach is one that supports your diabetes, cardiovascular, weight, cultural, and personal needs.
6. Don’t Smoke
Smoking and diabetes together increase cardiovascular risk.
NIDDK specifically recommends quitting smoking to help lower the chances of heart disease and stroke in people with diabetes.
If you smoke, ask your healthcare professional about evidence-based cessation support.
7. Don’t Skip Preventive Care
Regular diabetes appointments provide an opportunity to review:
- Blood pressure
- Cholesterol
- Kidney health
- Glucose management
- Weight
- Smoking status
- Physical activity
- Cardiovascular risk
- Medication effectiveness and side effects
A comprehensive approach is more useful than waiting until cardiovascular symptoms appear.
Can Diabetes Cause a Heart Attack?
Diabetes increases the risk of heart attack, but it does not mean a heart attack is inevitable.
Diabetes can contribute to atherosclerosis and often occurs alongside high blood pressure, abnormal cholesterol, obesity, and other cardiovascular risk factors.
Reducing these risks can help protect cardiovascular health.
Diabetes and Stroke
Diabetes also increases the risk of stroke.
High blood glucose can contribute to blood-vessel damage, while high blood pressure and cholesterol can further increase vascular risk.
Possible stroke warning signs
Think FAST:
F — Face: One side of the face may droop.
A — Arm: One arm may become weak or numb.
S — Speech: Speech may become slurred or difficult to understand.
T — Time: Call 911 immediately.
A suspected stroke is an emergency. Do not drive yourself to the hospital or wait for symptoms to improve.
Diabetes and Peripheral Artery Disease
Diabetes can also affect blood vessels supplying the legs and feet.
Peripheral artery disease (PAD) can reduce blood flow and may cause:
- Leg pain or cramping during walking
- Leg fatigue
- Cold feet
- Changes in skin color
- Poor wound healing
The 2026 ADA Standards recommend PAD assessment in certain asymptomatic adults with diabetes, including some people aged 65 or older and those with diabetes-related end-organ or foot complications, when the result would change management.
This is particularly relevant to people with diabetic foot problems.
Does Diabetes Cause Heart Disease in Everyone?
No.
Diabetes is an important cardiovascular risk factor, but individual risk varies considerably.
Factors such as:
- Age
- Diabetes duration
- Blood pressure
- Cholesterol
- Smoking
- Kidney disease
- Obesity
- Physical activity
- Family history
- Existing cardiovascular disease
all influence overall risk.
That is why cardiovascular prevention should be individualized rather than based on diabetes status alone.
Should Everyone With Diabetes Get a Heart Stress Test?
No—not automatically.
The 2026 ADA Standards do not recommend routine coronary artery disease screening in asymptomatic people with diabetes when cardiovascular risk factors are appropriately managed. Testing may be appropriate when a person has symptoms, abnormal ECG findings, peripheral vascular symptoms, or other clinical indications.
If you have concerns about your heart health, discuss your individual risk with your healthcare professional rather than ordering a test simply because you have diabetes.
When Should You Seek Emergency Care?
Call 911 if you have possible heart attack symptoms such as:
- Chest pressure, squeezing, fullness, or pain
- Shortness of breath
- Pain spreading to the arm, back, neck, jaw, or stomach
- Cold sweating
- Nausea
- Lightheadedness
- Unusual or severe weakness
Do not wait to determine whether the symptoms are caused by indigestion, anxiety, or something else.
Also call 911 for possible stroke symptoms such as sudden facial drooping, arm weakness, speech difficulty, sudden confusion, or other sudden neurological changes.
Diabetes and Heart Disease: Quick Comparison
| Diabetes-related factor | Potential cardiovascular effect |
|---|---|
| High blood glucose | Can contribute to blood-vessel damage |
| High blood pressure | Increases cardiovascular risk |
| High LDL cholesterol | Promotes atherosclerotic plaque formation |
| Smoking | Substantially increases vascular risk |
| Obesity | Associated with multiple cardiometabolic risk factors |
| Kidney disease | Associated with higher cardiovascular risk |
| Physical inactivity | Can worsen cardiovascular and metabolic health |
| Diabetes duration | Risk generally increases with longer duration |
Frequently Asked Questions
Is diabetes bad for your heart?
Yes. Diabetes increases the risk of cardiovascular conditions such as coronary artery disease, heart attack, stroke, peripheral artery disease, and heart failure.
How much does diabetes increase heart disease risk?
CDC states that people with diabetes have twice the risk of heart disease compared with people without diabetes. NIDDK describes adults with diabetes as nearly twice as likely to have heart disease or stroke.
Can you prevent heart disease if you have diabetes?
You cannot eliminate all cardiovascular risk, but managing blood glucose, blood pressure, cholesterol, weight, smoking, physical activity, and other risk factors can substantially reduce risk.
Can diabetes cause heart failure?
Diabetes is a risk factor for heart failure, and the 2026 ADA Standards report that heart failure is at least twice as prevalent among people with diabetes compared with people without diabetes.
Can high blood sugar cause a heart attack?
Persistently elevated blood glucose contributes to cardiovascular risk, but a heart attack usually results from a combination of factors, including atherosclerosis and other cardiovascular risks.
What is the best blood pressure for someone with diabetes?
The appropriate target is individualized. The 2026 ADA Standards recommend an on-treatment goal of less than 130/80 mmHg if safely attainable for people with diabetes and hypertension. A lower systolic goal may be encouraged for people at high cardiovascular or kidney risk.
Do people with diabetes need statins?
Many adults with diabetes do. The 2026 ADA Standards recommend moderate-intensity statin therapy for people aged 40–75 with diabetes who do not have ASCVD, with treatment intensity adjusted according to cardiovascular risk and other factors.
Can exercise reduce heart disease risk with diabetes?
Regular physical activity can support cardiovascular health and diabetes management. The appropriate activity level depends on a person’s overall health, fitness, medications, and complications.
Should people with diabetes have routine heart screening?
Not necessarily. Routine coronary artery disease screening is not recommended for asymptomatic people with diabetes when cardiovascular risk factors are being appropriately managed. Testing is considered when symptoms or other clinical findings suggest cardiovascular disease.
What are the warning signs of a heart attack?
Possible warning signs include chest pressure or discomfort, shortness of breath, discomfort in the arm, back, neck, jaw, or stomach, sweating, nausea, lightheadedness, and unusual fatigue. Call 911 if these symptoms occur.
Can women with diabetes have different heart attack symptoms?
Women can experience the same common symptoms as men, including chest discomfort, but may also have symptoms such as unusual fatigue, shortness of breath, nausea, or back, shoulder, or jaw discomfort.
Key Takeaways
Diabetes and heart disease are closely linked, but cardiovascular risk can be actively managed.
The most important steps are:
- Keep blood glucose within your individualized target.
- Monitor and treat high blood pressure.
- Manage cholesterol.
- Follow an appropriate heart-healthy eating pattern.
- Stay physically active.
- Maintain a healthy weight when appropriate.
- Don’t smoke.
- Take prescribed medications consistently.
- Attend regular diabetes and cardiovascular-risk appointments.
- Know the warning signs of heart attack and stroke.
The 2026 ADA Standards emphasize comprehensive cardiovascular risk reduction rather than focusing on blood glucose alone. For some people with type 2 diabetes and established cardiovascular disease or high cardiovascular risk, certain glucose-lowering medicines can also provide cardiovascular benefits.
Medical disclaimer: This article is for educational purposes and does not replace personalized medical advice. If you have diabetes and develop chest discomfort, significant shortness of breath, sudden weakness, speech difficulty, or other possible emergency symptoms, seek emergency medical care immediately.
References
This article is based on current recommendations from internationally recognized medical organizations and peer-reviewed evidence, including:
- American Diabetes Association (ADA) Standards of Care
- Centers for Disease Control and Prevention (CDC)
- National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK)
- World Health Organization (WHO)
Medically Reviewed By
Dr. Ch. Srujith, MBBS, MD (General Medicine)
General Physician & Diabetologist | 15+ Years of Clinical Experience | Hyderabad, India
This article has been medically reviewed for medical accuracy and reflects current evidence-based recommendations available as of 2026. It is intended for educational purposes only and should not replace personalized medical advice, diagnosis, or treatment. For concerns about diabetes or blood sugar management, consult a qualified healthcare professional.
Author
Yamanandan Reddy
Health Content Writer & Frontend Developer
Yamanandan Reddy is a health content writer and frontend developer with over 4 years of experience in website design and digital content creation. He writes research-based health articles to help readers understand symptoms, causes, treatments, and prevention methods related to common health conditions.
⚠️ Medical Disclaimer
This content is for informational purposes only and does not replace professional medical advice. Always consult a qualified healthcare provider for diagnosis and treatment.