heart with fatigue

Overview

Feeling tired all the time can be a sign that your heart is not pumping blood as well as it should. When the heart has to work harder, you may feel exhausted even after simple activities like walking or climbing stairs. This kind of fatigue is different from normal tiredness — it does not go away with rest and can make daily tasks difficult.

Yes, fatigue is a very common complaint among people with heart conditions. Many people with heart problems report feeling unusually tired as one of their first symptoms.

Heart-related fatigue can affect anyone, but it is more common in older adults, people with high blood pressure, diabetes, or a history of heart disease. It also affects people with heart failure, coronary artery disease, or heart valve problems.

Symptoms

Common symptoms

• Feeling extremely tired after little effort, like getting dressed or making a meal
• Lack of energy that does not improve with rest
• Shortness of breath during normal activities
• Swollen ankles, feet, or legs (oedema)
• Difficulty concentrating or feeling 'foggy'

Symptoms in children

• Unusual sleepiness or listlessness
• Poor feeding or breathing hard while eating
• Not gaining weight as expected

Symptoms in older adults

• Confusion or memory problems due to low blood flow
• Increased falls or unsteadiness
• Reduced interest in activities they used to enjoy

Causes

Main causes

• Heart failure: when the heart is too weak to pump enough blood to meet the body's needs
• Coronary artery disease: narrowed arteries reduce oxygen-rich blood to the heart muscle
• Abnormal heart rhythms (arrhythmias) that make the heart beat too fast, too slow, or unevenly
• Heart valve disease: faulty valves force the heart to work harder
• Cardiomyopathy: a disease of the heart muscle itself

Risk factors

• High blood pressure
• Diabetes
• High cholesterol
• Smoking or tobacco use
• Obesity
• Family history of heart disease
• Being physically inactive
• A diet high in salt, sugar, and unhealthy fats

When to see a doctor

See a doctor urgently if:

• You have any of the emergency symptoms listed above – call your local emergency number right away.
• Your fatigue suddenly gets much worse or is accompanied by chest pain or trouble breathing.

Book a routine appointment if:

• You have felt unusually tired for more than a few weeks, especially if it is affecting your daily life.
• You also have swelling in your legs, shortness of breath, or a cough that won't go away.
• You have been diagnosed with a heart condition and your symptoms are changing.

Diagnosis

Your doctor will start by asking about your symptoms, medical history, and lifestyle. They will listen to your heart and lungs with a stethoscope and check for swelling in your legs. Based on what they find, they may order tests to see how your heart is working.

Tests that may be done

• Blood tests: to check for anaemia, kidney function, and a chemical called BNP that goes up in heart failure
• Electrocardiogram (ECG): a quick, painless recording of your heart's electrical activity
• Echocardiogram (echo): an ultrasound of your heart to see how well it pumps and if the valves are working
• Chest X-ray: to look at the size of your heart and check for fluid in the lungs
• Exercise stress test: walking on a treadmill while your heart is monitored to see how it performs under exertion

What to expect at your appointment

Most tests are painless and done in a clinic or hospital. You may need to fast before blood tests or wear comfortable clothes for an exercise test. The doctor will explain the results and discuss next steps. Getting a clear diagnosis can be the first step toward feeling more energetic.

Treatment

Treatment for heart-related fatigue focuses on the underlying condition. Your healthcare team will work with you to create a plan that may include lifestyle changes, medicines to help your heart pump better, and sometimes procedures to improve blood flow. The goal is to reduce symptoms and improve your quality of life.

Self-care at home

• Rest during the day when you need to, but try to stay as active as your doctor advises
• Keep a diary of your weight, swelling, and energy levels to share with your doctor
• Limit salt in your diet to help control fluid buildup
• Quit smoking and avoid alcohol or limit it to small amounts
• Learn to pace yourself – spread activities out over the day

Medical treatments

Doctors may prescribe medications to help the heart relax, remove extra fluid, and pump more efficiently. These can include types of diuretics (water pills), beta-blockers, ACE inhibitors, or other heart-failure medicines. The exact combination depends on your specific condition. Never change or stop a medication without talking to your doctor first.

When is surgery considered?

In some cases, surgery or a procedure may be needed – for example, to fix a blocked artery (angioplasty or bypass), repair a faulty heart valve, or implant a pacemaker or defibrillator. Your doctor will explain if these are options for you and what they involve.

Living with this condition

Managing heart-related fatigue means learning to listen to your body. Plan your day so you have time for rest. Break tasks into smaller steps. Accept help from family and friends when you need it. Keep a regular sleep schedule and avoid naps that are too long. Stay in touch with your healthcare team and report any changes in your symptoms.

Lifestyle tips

• Stay as physically active as your doctor recommends – gentle walking or chair exercises can help
• Keep a healthy weight to reduce strain on your heart
• Manage stress with deep breathing, meditation, or talking to someone you trust
• Get enough sleep – aim for 7–8 hours a night

Diet and exercise

Eat a heart-healthy diet rich in fruits, vegetables, whole grains, and lean proteins. Limit salt, sugar, saturated fats, and processed foods. Your doctor or a dietitian can give you specific advice. For exercise, start slowly and build up. Even short walks can help your heart get stronger and boost your energy. Always check with a professional before starting a new exercise routine.

Mental health and emotional wellbeing

Feeling tired all the time can be frustrating and may lead to anxiety or depression. It is normal to feel worried about your health. Talk to your doctor about how you are feeling. They can connect you with counselling or support groups. Taking care of your mental health is just as important as taking care of your heart.

Prevention

You cannot always prevent heart conditions that cause fatigue, but you can reduce your risk. Eating well, staying active, not smoking, limiting alcohol, and controlling conditions like high blood pressure and diabetes all help. Regular check-ups with your doctor can catch problems early.

Vaccines

Getting recommended vaccines, such as the flu shot and pneumonia vaccine, can prevent infections that put extra stress on the heart. Ask your doctor which vaccines are right for you.

Screening programmes

If you have risk factors like high blood pressure, diabetes, or a family history of heart disease, regular heart health check-ups are important. Your doctor may suggest blood pressure checks, cholesterol tests, and other screening tests based on your age and health.

Complications

If left untreated

• Worsening of the underlying heart condition
• Frequent hospitalisations due to fluid buildup or shortness of breath
• Reduced ability to walk or do everyday tasks
• Increased risk of falls and injuries from weakness
• Depression and social isolation

Long-term outlook

Many people with heart-related fatigue feel much better once they get the right treatment. Medications, lifestyle changes, and support can help you stay active and enjoy life. While some heart conditions are long-term, most can be managed well with proper care. Your healthcare team is there to help you every step of the way.

Find support

Local organisations

• British Heart Foundation · UK

External links open third-party websites. Ruqelo Health is not responsible for external content. Listing an organisation does not imply endorsement.