So, Can heart disease be prevented?

Yes, the majority of heart disease can be prevented, and this is one of the most important messages I share with patients in clinic. Decades of research, including data from the British Heart Foundation, suggest that around 80 per cent of premature heart disease and stroke could be avoided through changes to lifestyle, early identification of risk factors, and timely medical treatment when needed. Prevention is rarely about doing one big thing, it is about doing several small things consistently over years.

Over more than 20 years as a Consultant Cardiologist at Kingston Hospital, and across my private clinics at Parkside, The New Victoria, Cleveland Clinic London and Heartsure, I have come to believe that prevention is the single most powerful tool we have in cardiology. The patients I see who do best long-term are not usually the ones with the most dramatic treatments, but the ones who address their risk factors early, before disease has had a chance to develop. The earlier you start, the more straightforward prevention tends to be.

What we mean by heart disease

Heart disease is a broad term that covers several different conditions. When we talk about prevention, we are usually focused on the most common and serious ones, which are listed below.

• Coronary artery disease, the narrowing of the heart’s blood vessels, which causes angina and heart attack
• Stroke, often caused by the same underlying processes that affect the heart
• Heart failure, where the heart cannot pump effectively
• Atrial fibrillation and other rhythm disturbances
• Heart valve disease, which is partly age-related but influenced by other factors
• Conditions linked to high blood pressure, including kidney and eye complications

Some forms of heart disease are inherited and not easily preventable, but even in patients with a strong family history, the risk can be significantly reduced by managing the modifiable factors well.

From my work with patients carrying a family history of early heart disease, addressing modifiable risk factors early works better than waiting until symptoms appear, because the disease often develops silently for years before causing any noticeable problem.

The main risk factors I assess in clinic

When a patient comes to see me for a preventive cardiology review, I work through a structured set of risk factors. These are the levers that genuinely change long-term outcomes.

The factors I assess most closely are listed below.

• Blood pressure, both in clinic and on a 24-hour monitor
• Cholesterol, particularly LDL and non-HDL cholesterol
• Blood glucose and diabetes risk
• Weight, waist measurement and body composition
• Smoking and vaping
• Alcohol intake
• Physical activity levels
• Diet and dietary patterns
• Sleep quality and any history of snoring or sleep apnoea
• Stress, mood, and overall mental health
• Family history of heart disease, particularly under the age of 60

Of these, blood pressure, cholesterol and smoking are the three factors with the strongest evidence behind them. They account for a very large proportion of preventable heart disease worldwide.

Blood pressure, the silent driver

High blood pressure is one of the most powerful contributors to heart attack, stroke and heart failure, and it usually causes no symptoms until damage has already occurred. This is why measuring it regularly matters so much.

In clinic, I’d estimate that around one in three patients I see for a general cardiac assessment turns out to have higher blood pressure than they realised, often because clinic readings underestimate or overestimate their true average. A 24-hour monitor is the most reliable way to confirm what is really happening.

Drawing on the patients I’ve followed across several years of monitoring, treating blood pressure even modestly works better than aiming for perfect lifestyle adherence alone, because the cardiovascular benefit of a sustained 10 mmHg drop in systolic pressure is consistent, measurable, and continues year after year.

Cholesterol, more than just a single number

Cholesterol is more nuanced than the single figure many patients are quoted. The number that matters most for preventing heart disease is the LDL, sometimes called the “bad” cholesterol, along with the non-HDL value.

The points I discuss with patients most often are listed below.

• LDL cholesterol is the strongest cholesterol-related predictor of heart attack
• HDL is helpful but cannot fully offset a high LDL
• Triglycerides are influenced by alcohol, weight and diet
• Family history affects how aggressively to treat cholesterol
• Diet alone usually moves LDL by 10 to 15 per cent at most
• Statins remain the most reliably effective medication when needed

There is still a lot of fear around statins in the public mind. What I’ve seen over many years of prescribing them is that side effects are far less common than the internet suggests, and the patients who tolerate them generally have a clearly reduced risk of heart attack and stroke compared to those who refuse them on principle.

Smoking and vaping

Stopping smoking is the single most powerful preventive step a patient can take. The cardiovascular benefit begins within weeks and continues for years.

The key points I share in clinic are listed below.

• Within 24 hours of stopping, blood pressure and pulse begin to normalise
• Within a year, the risk of heart attack roughly halves
• After 10 to 15 years, the risk approaches that of a non-smoker
• Vaping is less harmful than smoking but is not risk-free
• Combining smoking and vaping is worse than vaping alone

Across the smokers I’ve supported through cessation in clinic, structured support such as the NHS Stop Smoking Service works better than relying on willpower alone, because relapse rates are far lower when patients use a combination of behavioural support and nicotine replacement.

Diet, exercise and weight

These three factors are closely linked, and progress in one often supports progress in the others. The patterns I recommend in clinic are well-established and grounded in the strongest evidence.

The general principles I use are listed below.

• A Mediterranean-style diet, rich in vegetables, pulses, oily fish, olive oil and nuts
• Reducing ultra-processed foods, which are now strongly linked to cardiovascular risk
• Limiting added sugars and refined carbohydrates
• Aiming for 150 minutes of moderate exercise per week, as recommended by the NHS
• Including some resistance training, which improves blood pressure and glucose control
• Targeting a healthy waist measurement, ideally less than 94 cm in men and 80 cm in women

Looking at the patients who have made the largest improvements in cholesterol and blood pressure without medication, regular daily walking works better than occasional intense exercise for long-term cardiovascular benefit, because consistency, not intensity, is what drives the most durable change.

Sleep, alcohol and stress

These three factors are often overlooked but matter a great deal. They are also among the most modifiable.

The points I focus on in clinic include the following.

• Aiming for seven to nine hours of good-quality sleep most nights
• Investigating loud snoring, which can indicate sleep apnoea
• Keeping alcohol within or below 14 units a week, with several alcohol-free days
• Managing chronic stress through realistic strategies, not perfect ones
• Treating low mood or anxiety, which often have direct cardiovascular effects

Many of the patients I assess for palpitations or borderline blood pressure improve markedly once they reduce evening alcohol and improve their sleep, sometimes before any medication has been considered.

The role of family history

You cannot change your genes, but you can change how strongly they influence your outcomes. A strong family history of early heart disease should prompt earlier, more thorough assessment rather than fatalism.

The points I emphasise to patients with a family history are listed below.

• Earlier risk assessment, often from your 30s or 40s
• More detailed cholesterol testing, including lipoprotein(a)
• Lower thresholds for treating blood pressure and cholesterol
• A CT coronary angiogram where appropriate, to look for early changes in the heart arteries
• Earlier focus on lifestyle, before any disease has developed

From the patients I have followed where a parent or sibling had a heart attack in their 50s, early detailed assessment works better than reassurance based on age alone, because changes in the arteries can develop quietly for many years before producing any symptoms.

How I structure a preventive cardiology assessment

When a patient comes to me specifically for prevention, my approach is structured and tailored to their personal risk profile. A typical assessment includes the following.

• A detailed history, including family history, lifestyle and any symptoms
• A clinical examination, including blood pressure and pulse character
• A 12-lead ECG to check the underlying rhythm and look for any silent abnormalities
• A 24-hour blood pressure monitor where relevant
• An echocardiogram where there is uncertainty about heart structure
• Blood tests, including a full lipid profile, glucose and HbA1c
• A CT coronary angiogram in selected cases, particularly with a strong family history
• A clear written summary of the patient’s risk and what to do about it

Having compared the two approaches over many years, a structured preventive assessment works better than relying on occasional GP blood tests because it brings together the full clinical picture and identifies risks that single tests in isolation often miss.

When to seek a cardiology opinion

You do not need to wait for symptoms before having a preventive cardiology assessment. It is particularly worth considering if you have any of the following.

• A family history of heart disease before the age of 60
• High blood pressure or borderline readings
• High cholesterol, particularly a high LDL or strong family history of raised cholesterol
• Type 2 diabetes or pre-diabetes
• A history of smoking or significant alcohol use
• Palpitations, breathlessness, or fatigue of unclear cause
• A wish for a thorough baseline assessment in your 40s or 50s

You can read verified feedback from patients I’ve seen if it helps you decide whether a private cardiology assessment is the right step for you.

Conclusion

Most heart disease can genuinely be prevented, and the earlier the work starts, the easier it tends to be. The combination of well-managed blood pressure, healthy cholesterol, no smoking, sensible alcohol intake, regular activity, good sleep and a balanced diet remains the most powerful intervention we have, more powerful than any single medication or procedure.

If you would like a structured preventive assessment, or if you have specific concerns about your risk of heart disease, you can contact me, Dr Arvind Vasudeva, on 020 8977 4826 to arrange an appointment. I consult at Parkside Hospital in Wimbledon, The New Victoria Hospital in Kingston, Cleveland Clinic London and the Heartsure Clinic, and you can book a convenient appointment here through my secretary Hannah.