Diabetes significantly increases cardiovascular risk, yet many people with diabetes never see a cardiologist — even when they should. Knowing when to ask for a cardiology referral, and what to expect when you get one, could be one of the most important steps you take for your long-term health.
Why People with Diabetes Have Elevated Cardiovascular Risk
Cardiovascular disease is the leading cause of death in people with both type 1 and type 2 diabetes. The mechanisms are multiple and interconnected: chronic hyperglycaemia damages blood vessel walls; insulin resistance promotes dyslipidaemia and hypertension; advanced glycation end-products (AGEs) stiffen arterial walls; and chronic inflammation accelerates atherosclerotic plaque formation. The result is that people with diabetes develop cardiovascular disease earlier, more severely, and with less warning than people without diabetes.
Signs You Should Ask for a Cardiology Referral
- Chest pain, tightness, pressure, or discomfort — especially with exertion
- Shortness of breath at rest or with minimal activity
- Palpitations, irregular heartbeat, or episodes of rapid heart rate
- Unexplained dizziness, fainting, or near-fainting episodes
- Swelling of the legs or ankles (possible heart failure)
- Sudden severe fatigue or unexplained exercise intolerance
When to Request a Routine Cardiology Referral
Beyond emergency symptoms, there are several situations where a planned cardiology referral is appropriate for people with diabetes:
- Diabetes duration of 10+ years with additional risk factors (hypertension, dyslipidaemia, smoking, obesity, family history)
- Abnormal ECG findings at your annual diabetes review
- Established chronic kidney disease (eGFR <60) — strongly associated with cardiovascular risk
- History of peripheral arterial disease (poor circulation in legs)
- Multiple failed attempts to reach blood pressure or cholesterol targets despite medication
- Considering high-intensity exercise after a period of inactivity
What Happens at a Cardiology Appointment?
A cardiology assessment for someone with diabetes typically includes a detailed history and physical examination, resting ECG, echocardiogram (ultrasound of the heart), exercise stress test (if appropriate), and blood tests including BNP (a marker of heart strain). Depending on findings, further investigations such as coronary CT angiography or nuclear stress testing may be arranged.
Do not wait for symptoms to ask about your heart health. If you have had diabetes for more than 10 years, have additional cardiovascular risk factors, or have any of the warning signs listed above, speak to your GP about a cardiology referral. Early detection and intervention saves lives — and in diabetes, the cardiovascular clock starts ticking at diagnosis.

