Metabolic Syndrome and Cardiometabolic Health
Diabetes and Heart Disease: The Metabolic Risk Link
Written by Dr. Ajay V. Kaduskar, Diabetologist, Nagpur
MD (Medicine), PGDHSc (Diabetology), FEACD (The Netherlands)
Published · 4 min read
Quick answer
People with diabetes are about two times more likely to develop heart disease and stroke than people without it, and often at a younger age in India. High blood sugar damages blood vessels, and diabetes usually comes with other risks such as high blood pressure, abnormal cholesterol, belly fat and kidney disease. Controlling all of these together, not only sugar, lowers the risk.
Most people with diabetes know about the risk to eyes and kidneys. Fewer realise that heart disease is the biggest threat. Understanding how diabetes and the heart are linked puts you in a stronger position to protect both.
How does diabetes harm the heart?
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Damaged blood vessels: High sugar injures the inner lining of arteries, making fatty plaques form faster.
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Inflammation and clotting: Diabetes increases inflammation and the tendency to form clots.
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High blood pressure: Common in diabetes and strains the heart.
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Abnormal cholesterol: High triglycerides, low HDL and small dense LDL particles are typical.
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Insulin resistance and belly fat: Which drive many of these changes.
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Kidney disease: Raises heart risk further.
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Nerve damage: Diabetes can affect the nerves of the heart, so a heart attack may cause little or no chest pain.
What heart conditions are more common?
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Coronary artery disease and heart attack
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Stroke
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Heart failure
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Peripheral artery disease (poor blood flow to the legs)
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Abnormal heart rhythms such as atrial fibrillation
What are the warning signs?
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Chest pain, pressure or tightness, especially with effort
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Breathlessness, tiredness or reduced stamina
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Swelling of the legs
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Pain in the calves while walking
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Palpitations or dizziness
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In diabetes, symptoms may be subtle: unusual tiredness, indigestion-like discomfort, sweating or jaw and arm pain
Call emergency services for sudden chest pain, severe breathlessness, weakness of one side of the body or trouble speaking.
Which numbers matter?
Besides HbA1c, discuss targets for:
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Blood pressure: Generally below 130/80 mm Hg.
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LDL cholesterol: Often below 70 mg/dL, and lower in those with heart disease. Your doctor will set it.
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Triglycerides: Below 150 mg/dL.
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Waist: Below 90 cm in men and 80 cm in women.
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Kidney tests: uACR and eGFR.
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Weight and BMI.
How can you protect your heart?
Control sugar, but safely
Aim for the HbA1c target your doctor sets, which is usually around 7 percent for many adults, but individualised.
Control blood pressure
Reduce salt, stay active, lose excess weight and take medicines as prescribed.
Treat cholesterol
Most adults with diabetes benefit from a statin. Take it regularly and do not stop without advice.
Choose medicines with heart benefits
Some diabetes medicines reduce heart attacks, strokes or heart failure in selected patients. Examples include certain GLP-1 medicines and SGLT2 inhibitors. Your doctor will choose based on your risk.
Eat well and stay active
Choose vegetables, pulses, whole grains, nuts and fish. Limit sugar, refined foods, fried snacks and processed meat. Exercise for 150 minutes a week, with strength training twice a week.
Quit tobacco and limit alcohol
Smoking greatly multiplies the risk of heart attack in diabetes.
Sleep and stress
Treat sleep apnoea and manage stress.
Regular checks
Have an annual review of blood pressure, cholesterol, kidney tests, eyes and feet. Your doctor may advise an ECG or other heart tests.
Should you take aspirin?
Not automatically. Aspirin is advised for those with established heart disease. In others, the bleeding risk may outweigh the benefit. Ask your doctor.
When should you see a doctor?
See your doctor if you have chest discomfort, breathlessness, swollen legs, calf pain on walking or if your blood pressure or cholesterol is above target.
Points to keep
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Diabetes doubles the risk of heart disease and stroke.
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Blood sugar, blood pressure, cholesterol and belly fat all matter.
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Symptoms may be subtle in people with diabetes.
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Statins, blood pressure control, healthy habits and heart-protective diabetes medicines help.
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Regular check-ups catch problems early.
Protecting your heart is part of managing diabetes. Small improvements across several numbers add up to a big reduction in risk. To review your heart risk, consult Dr. Ajay V. Kaduskar, a diabetologist at Niramay Clinics in Nagpur.
Sources and further reading
Frequently asked questions
High sugar damages blood vessels, and diabetes often comes with high blood pressure, abnormal cholesterol, belly fat and inflammation, all of which promote heart disease.
Yes. Nerve damage can reduce pain, so symptoms may be mild, such as unusual tiredness, sweating or breathlessness. Get checked for any new symptoms.
Targets are individual, but LDL is often kept below 70 mg/dL, and lower for those with heart disease. Your doctor will set your target.
Many adults with diabetes benefit from a statin, particularly those over 40 or with other risk factors. Your doctor will decide based on your risk.
Certain GLP-1 medicines and SGLT2 inhibitors have been shown to reduce heart events or heart failure in selected patients. Metformin also has a long track record. Your doctor will choose.
At least once a year, including blood pressure, cholesterol and symptom review. More tests such as ECG or stress tests are done if you have symptoms or high risk.
Related reading
- Full guide: metabolic syndrome
- Fatty Liver and Diabetes: Why They Occur Together
- Diabetes and Kidney Disease: Which Tests You Need
- Belly Fat, Diabetes and Metabolic Health: Why Waist Matters
- What Is Metabolic Syndrome? 5 Risk Factors Explained
- High Triglycerides, Diabetes and Obesity: What Is the Link?
If you would like advice suited to your own reports and medicines, you can book an appointment or visit Niramay Clinics in Dhantoli, Nagpur.
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