Diabetes and Your Heart: Why the Risk Is Higher and How to Lower It

5 min readType 2 Diabetes BasicsPart 6 of 18

In brief

Adults with diabetes have about twice the risk of heart disease and stroke as people without it.
The ABCs (A1C, blood pressure, cholesterol and stopping smoking) protect the heart.
Some diabetes medicines, including certain SGLT2 inhibitors and GLP-1 medicines, also lower the risk of heart attack, stroke or heart failure.

When people think about diabetes, they usually think about blood sugar. But the complication most likely to shorten life for someone with type 2 diabetes is not an eye or foot problem. It is cardiovascular disease: heart attack, stroke, heart failure and blocked arteries in the legs. Understanding this link turns heart protection into one of the most powerful things you can do.

How big is the risk?

twicethe risk of coronary heart disease and stroke

firstheart and blood vessel disease is the leading cause of death in diabetes

130 over 80blood pressure goal (mmHg) for most adults with diabetes

A large analysis of over 100 studies found that diabetes roughly doubles the risk of coronary heart disease and ischemic stroke, independent of other risk factors. The risk rises the longer someone has diabetes and the higher their blood sugar, but it is strongly influenced by things that can be changed.

Why diabetes affects the heart

From high blood sugar to heart disease

High glucoseand high insulin levels

Vessel lining damagedinflammation and stiffness

Partners in crimehigh BP, high triglycerides, low HDL

Plaque buildsarteries narrow and can block

Heart attack, strokeand heart failure

High blood sugar damages the thin inner lining of blood vessels, making them inflamed, stiff and more likely to collect fatty plaque. Type 2 diabetes also rarely travels alone. Insulin resistance tends to bring high blood pressure, high triglycerides, low “good” HDL cholesterol and more small, dense LDL particles, the kind most likely to lodge in artery walls. Together, these speed up hardening of the arteries.

Diabetes can also weaken and stiffen the heart muscle itself, raising the risk of heart failure, and can damage the nerves to the heart, which is why heart attacks are sometimes “silent”.

The ABCs of heart protection

A — A1C

An individual goal, often below 7%. Lower sugar protects small vessels quickly and large vessels over the long term.

B — Blood pressure

Below 130/80 mmHg for most adults with diabetes, if it can be reached safely. Check it at every visit.

C — Cholesterol

Most adults with diabetes aged 40–75 benefit from a statin. Many aim for LDL below 70 mg/dL (1.8 mmol/L), lower if heart disease is already present.

S — Stop smoking

Smoking and diabetes together multiply risk. Quitting is one of the fastest ways to lower it. Ask about support.

For a clear guide to your lipid results, see Understanding Your Cholesterol Numbers.

Regular activity improves blood sugar, blood pressure and cholesterol at the same time.

Medicines that protect the heart

Over the past decade, large trials changed diabetes care. Some glucose-lowering medicines turned out to protect the heart and kidneys too:

SGLT2 inhibitors (such as empagliflozin and dapagliflozin) lower the risk of heart failure hospitalization and slow kidney disease. In the EMPA-REG OUTCOME trial, empagliflozin also reduced cardiovascular death.
GLP-1 receptor agonists with proven benefit (such as liraglutide, semaglutide and dulaglutide) lower the risk of heart attack, stroke and cardiovascular death in people with established heart disease or high risk.

For people with type 2 diabetes and heart disease, heart failure or kidney disease, the American Diabetes Association recommends one or both of these classes regardless of A1C. Blood pressure medicines, statins and, for some people, low-dose aspirin complete the picture. See Type 2 Diabetes Medicines Explained.

Everyday habits that count

Lifestyle changes improve several risk factors at once: about 150 minutes a week of moderate activity plus some strength training, a Mediterranean-style eating pattern rich in vegetables, legumes, nuts, olive oil and fish, less salt and fewer ultra-processed foods, good sleep, and moderate or no alcohol. Our 8 Everyday Habits for a Healthier Heart turns this into a simple checklist.

Know the warning signs of a heart attack or stroke. Call your local emergency number (911 in the US) immediately for chest pain or pressure, pain spreading to the arm, jaw or back, sudden breathlessness, cold sweat, or sudden face drooping, arm weakness or slurred speech.

People with diabetes, women and older adults may have milder or unusual symptoms, such as unexplained breathlessness, nausea or extreme tiredness. Do not wait to see if they pass.

Common questions

Should everyone with diabetes take aspirin?

No. Low-dose aspirin is recommended for people with diabetes who already have heart disease or have had a stroke. For people without heart disease, the bleeding risk often outweighs the benefit, so it is an individual decision to make with your doctor.

Do I need a statin if my cholesterol is normal?

Often, yes. Because diabetes itself raises heart risk, guidelines recommend a statin for most adults with diabetes aged 40–75, even when cholesterol looks normal. Statins lower the risk of heart attack and stroke. Discuss the benefits and any side effects with your doctor.

Is heart failure really linked to diabetes?

Yes. People with type 2 diabetes are more likely to develop heart failure, where the heart pumps less effectively. Watch for breathlessness, swollen ankles and tiredness. SGLT2 inhibitors reduce hospital admissions for heart failure, which is one reason they are widely recommended.

Key takeaways

Type 2 diabetes about doubles the risk of heart disease and stroke.
Managing the ABCs is as important as managing blood sugar.
Some diabetes medicines protect the heart and kidneys directly.
Next: Preventing long-term complications.

Type 2 Diabetes Basics: all 18 articles

Sources

Emerging Risk Factors Collaboration; Sarwar N, et al. Diabetes mellitus, fasting blood glucose concentration, and risk of vascular disease: a collaborative meta-analysis of 102 prospective studies. Lancet. 2010;375:2215–2222.
Centers for Disease Control and Prevention. Diabetes and Your Heart.
American Heart Association. Cardiovascular Disease and Diabetes.
American Diabetes Association Professional Practice Committee. 10. Cardiovascular Disease and Risk Management: Standards of Care in Diabetes—2026. Diabetes Care. 2026;49(Suppl 1).
Zinman B, Wanner C, Lachin JM, et al. Empagliflozin, cardiovascular outcomes, and mortality in type 2 diabetes. N Engl J Med. 2015;373:2117–2128.
Marso SP, Daniels GH, Brown-Frandsen K, et al. Liraglutide and cardiovascular outcomes in type 2 diabetes. N Engl J Med. 2016;375:311–322.

This article is for general education and is not a substitute for advice from your own doctor, diabetes educator or pharmacist.

How we review: Every Vitablizz article is checked against the sources it cites and updated when guidance changes. This article is for education and is not a substitute for personal medical advice. Read our Editorial Policy.