Two out of three people with diabetes will die from a heart event.
This is not meant to scare you. It is meant to clarify: when you manage diabetes, you are primarily protecting your heart and blood vessels. Blood sugar is the headline number, but cardiovascular risk is the real game.
Why diabetes hurts the heart
High blood sugar over years damages the inside lining of blood vessels (the endothelium). Damaged vessels accumulate plaque faster. Plaque narrows arteries. Narrow arteries plus a high-pressure event = heart attack or stroke.
Diabetes also drives high blood pressure, abnormal cholesterol (low HDL, high triglycerides), and chronic inflammation — all heart-disease accelerators.
The numbers to know
- Blood pressure: ideally under 130/80
- LDL cholesterol: under 70 mg/dL if you already have heart disease, under 100 otherwise
- HDL cholesterol: over 40 (men) / 50 (women)
- Triglycerides: under 150
- HbA1c: under 7%
What actually protects the heart
- Daily 30-minute walk — biggest single intervention
- Mediterranean or Indian-style plate (vegetables, lentils, whole grains, healthy fats)
- Lose 5-10% of body weight if overweight
- Stop smoking, full stop
- Limit alcohol — under 1 drink/day for women, 2 for men
- Statin medication — recommended for most over-40 diabetics by current guidelines
- Aspirin only if your doctor specifically prescribes it
Warning signs of a heart event
Diabetes can mute classic chest-pain warning signs. Be alert to:
- Unusual breathlessness
- Dizziness or sudden weakness
- Pain or pressure in jaw, neck, arm, or upper back
- Cold sweat with nausea
- Sudden fatigue that feels different
Call emergency services if you are unsure. Worth a wasted trip; not worth a missed event.