Dr Naveen Mudalagiri Cardiologist in East London

5.0 |

Published: 12/08/2026
Edited by: Odette Sotillo on 12/08/2026

Obesity can increase the risk of heart and circulatory conditions by contributing to high blood pressure, abnormal cholesterol levels, diabetes and changes in the structure and function of the heart.

Excess body fat, particularly around the abdomen, is associated with inflammation and metabolic changes that can place additional strain on the cardiovascular system. The European Society of Cardiology reports that around two-thirds of deaths associated with a high BMI are attributable to cardiovascular disease.

Which heart conditions are linked to obesity?

Obesity is associated with a higher risk of several cardiovascular conditions, particularly when other risk factors such as high blood pressure or diabetes are also present. These include:

Coronary heart disease, where fatty deposits narrow the arteries supplying the heart.
Heart attack and stroke, which can occur when blood vessels become blocked or damaged.
High blood pressure (hypertension), which increases the workload placed on the heart.
Heart failure, where the heart cannot pump blood around the body effectively.
Atrial fibrillation, an irregular heart rhythm that can increase the risk of stroke.

Obesity can also worsen existing cardiovascular disease. This means that managing weight alongside blood pressure, cholesterol and blood glucose can form an important part of reducing cardiovascular risk.

Why does obesity increase the risk of heart disease?

Obesity can affect cardiovascular health through several interconnected mechanisms, including increased blood pressure, insulin resistance, inflammation and changes in blood lipid levels.

The location of excess fat can also be relevant. Fat accumulated around the abdomen is metabolically active and may contribute to processes that damage blood vessels and increase cardiovascular risk. BMI is useful for assessing weight-related risk, but waist measurements can provide additional information about abdominal fat.

What symptoms can obesity-related heart problems cause?

Obesity itself may not cause specific heart symptoms, but cardiovascular complications can produce warning signs that should be assessed. These may include:

Breathlessness, particularly during physical activity or when lying down.
Chest pain or pressure, which can indicate reduced blood flow to the heart.
Palpitations, including a sensation of a racing or irregular heartbeat.
Persistent tiredness, particularly if associated with reduced exercise tolerance.
Swelling in the ankles or legs, which can occur with fluid retention in heart failure.
Dizziness or fainting, particularly when associated with an abnormal heart rhythm.

Not everyone with obesity will develop cardiovascular disease, and symptoms such as breathlessness can have many different causes. Assessment is therefore important when symptoms are persistent, new or worsening.

How are obesity-related heart conditions diagnosed?

Diagnosis involves assessing cardiovascular risk alongside symptoms, medical history and relevant physical measurements. Depending on the individual, this may include blood pressure measurement, cholesterol and blood glucose testing, weight and waist measurements, and an assessment of overall cardiovascular risk.

Further cardiac investigations may be recommended when symptoms or examination findings suggest a heart condition. These can include an electrocardiogram (ECG), echocardiogram, exercise testing or longer-term heart rhythm monitoring.

How can obesity-related heart problems be treated?

Treatment focuses on reducing cardiovascular risk while addressing the underlying causes and complications of excess weight. Depending on individual circumstances, management may include:

Dietary and physical activity changes to support sustainable weight loss and cardiovascular health.
Medicines to control conditions such as high blood pressure, high cholesterol, diabetes or heart rhythm disorders.
Weight-management medication when clinically appropriate and prescribed as part of a wider management plan.
Bariatric surgery for selected people with obesity when other approaches have not provided sufficient benefit.
Specific cardiac treatment where obesity has contributed to an established heart condition.

NICE recommends a personalised approach to managing overweight and obesity, incorporating behavioural support, physical activity, diet and, where appropriate, medicines or surgery.

What practical steps can help protect the heart?

Small, sustainable changes can improve cardiovascular health and may also help with weight management. Useful measures include:

Choose a balanced diet rich in vegetables, fruit, wholegrains, pulses and other minimally processed foods.
Increase physical activity gradually, according to fitness levels and any existing medical conditions.
Monitor blood pressure and cholesterol, particularly when cardiovascular risk factors are already present.
Avoid smoking and keep alcohol consumption within recommended limits.
Aim for sustainable weight loss rather than rapid or restrictive dieting.

Even a 5–10% reduction in body weight can provide meaningful health benefits for people living with overweight or obesity.

When should you seek medical help?

Medical advice should be sought if you have obesity alongside high blood pressure, diabetes, high cholesterol, known cardiovascular disease or symptoms such as breathlessness, chest discomfort or persistent palpitations.

Chest pain that is severe, persistent or accompanied by sweating, nausea, breathlessness or pain spreading to the arm, neck or jaw requires urgent medical attention.

If you have concerns about your cardiovascular health, visit Dr Naveen Mudalagiri’s Top Doctors profile to book a consultation.