Emma ThorntonHow the Cardiovascular System Changes With Age
The cardiovascular system undergoes progressive changes from midlife onward that increase the risk of heart disease, stroke, and peripheral vascular disease. The arteries stiffen as elastin fibres break down and collagen accumulates — a process called arteriosclerosis — increasing systolic blood pressure and the workload on the heart. The heart muscle itself becomes slightly less efficient, with reduced maximum cardiac output and heart rate. Left ventricular compliance decreases, making the heart less able to relax and fill efficiently between beats. These structural changes are normal accompaniments of aging, but they are significantly accelerated by hypertension, high cholesterol, diabetes, smoking, physical inactivity, and chronic inflammation. For the full healthy aging framework, see our complete healthy aging guide.
Key Cardiovascular Risk Factors in Aging
Blood Pressure
Hypertension — blood pressure above 130/80 mmHg — is the single most important modifiable cardiovascular risk factor and becomes more prevalent with age. By age 65, the majority of adults in Western countries have hypertension. Chronically elevated blood pressure damages arteries, overworks the heart, accelerates arteriosclerosis, and is the leading modifiable risk factor for stroke. Lifestyle interventions — dietary changes (particularly the DASH diet), exercise, sodium reduction, weight management, and stress reduction — can reduce blood pressure meaningfully and are the first-line approach for prehypertension and stage 1 hypertension.
Cholesterol and Lipids
LDL cholesterol is the primary driver of atherosclerotic plaque formation — the process by which fatty deposits build up inside artery walls and progressively narrow them. Total LDL burden over a lifetime matters more than any single reading. From midlife onward, keeping LDL below 2.6 mmol/L (100 mg/dL) — and lower for those at elevated risk — significantly reduces cardiovascular event risk. High triglycerides and low HDL further increase risk. Dietary changes (reducing saturated and trans fats, increasing soluble fiber and plant sterols) and regular exercise both improve lipid profiles meaningfully.
Inflammation
Chronic low-grade inflammation — measurable through blood markers including high-sensitivity CRP (hsCRP) — is now recognised as an independent cardiovascular risk factor beyond cholesterol and blood pressure. Inflammaging (the chronic low-grade inflammation associated with aging) drives plaque instability and arterial damage. Anti-inflammatory dietary patterns, exercise, stress management, sleep, and not smoking all reduce inflammatory markers. See our guide to stress and aging for how chronic stress drives cardiovascular inflammation.
Heart-Healthy Diet Patterns
The Mediterranean diet has the most extensive evidence for cardiovascular protection in aging — the PREDIMED trial showed that a Mediterranean diet supplemented with olive oil or nuts reduced major cardiovascular events by approximately 30% compared to a low-fat diet control in high-risk adults. Key features: abundant vegetables, fruits, legumes, whole grains, olive oil, and fish; moderate poultry and dairy; minimal red meat, processed food, and added sugar. The DASH diet (emphasising fruits, vegetables, low-fat dairy, and limiting sodium) is specifically designed for blood pressure reduction and is highly effective. See our anti-aging diet guide for detailed food recommendations.
Exercise and Cardiovascular Aging
Regular aerobic exercise is the most potent lifestyle intervention for cardiovascular health across the lifespan. It lowers resting heart rate, reduces blood pressure, improves lipid profiles (raising HDL, lowering triglycerides), improves glucose metabolism, reduces arterial stiffness, and reduces inflammatory markers. People who exercise regularly have significantly lower cardiovascular disease risk and mortality rates than sedentary peers. Even starting exercise in the 60s or 70s provides significant cardiovascular benefit. See our guide to exercise for healthy aging for specific recommendations.
Warning Signs to Watch For
Seek immediate medical attention for: chest pain or pressure (particularly radiating to the left arm, jaw, or back), sudden shortness of breath, sudden severe headache, facial drooping or asymmetry, arm weakness or numbness, sudden slurred speech or confusion, or sudden vision changes. These may indicate heart attack or stroke — conditions where every minute matters. Regular cardiovascular screening (blood pressure, cholesterol, blood glucose, and ECG if indicated) from midlife onward allows for early identification and management of risk before an event occurs.
FAQ
How does aging affect the heart?
The heart becomes slightly less efficient, arteries stiffen, and cardiovascular disease risk increases — but most of this risk is highly modifiable through lifestyle.
What is the best diet for heart health as you age?
The Mediterranean diet has the strongest clinical trial evidence for cardiovascular protection. It emphasises vegetables, fruits, legumes, olive oil, fish, and whole grains.
Can exercise reverse cardiovascular aging?
Regular aerobic exercise can partially reverse arterial stiffening and significantly improve all modifiable cardiovascular risk markers — it is the most powerful non-pharmacological intervention for cardiovascular health.
What blood pressure is too high after 60?
Current guidelines recommend a target of below 130/80 mmHg for most adults, including those over 60. Many older adults benefit from even tighter control if tolerated.
How often should I check my cholesterol?
At least every 5 years for adults over 40 without known risk factors; more frequently for those with elevated risk, known cardiovascular disease, or taking lipid-lowering medication.
Emma Thornton
Rachel Summers
James Hargreaves
Daniel Brooks
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