circulation overview for patients

Overview

Circulation is the process by which your heart pumps blood through a network of blood vessels to every part of your body. This blood carries oxygen and nutrients to your organs and tissues, and takes away waste products like carbon dioxide. When circulation is healthy, your body systems work as they should. When blood flow is reduced, it can cause various symptoms.

Circulation problems are very common. As people age, blood vessels naturally become less flexible, and many adults have conditions like high blood pressure or high cholesterol that can affect blood flow.

Circulation affects everyone. Poor circulation can occur at any age, but it is more common in older adults, people who smoke, and those with diabetes, high blood pressure, or heart disease.

Symptoms

Common symptoms

• Cold hands or feet
• Numbness or tingling in the fingers, toes, or legs
• Swelling in the lower legs, ankles, or feet
• Muscle cramps, especially in the legs during exercise
• Slow-healing sores or wounds on the feet or legs
• Tired or heavy feeling in the legs

Symptoms in children

• Children can have circulation problems due to heart conditions present at birth. Possible signs include unusual tiredness, poor feeding, shortness of breath, or blue-tinged lips or skin. These symptoms should be checked promptly.

Symptoms in older adults

• Older adults may notice pain in the calves when walking, which eases with rest. They may also feel faint or dizzy after standing up suddenly. For seniors, reduced blood flow can also affect memory and concentration.

Causes

Main causes

• Atherosclerosis: a condition in which fatty deposits build up inside arteries, narrowing them and reducing blood flow.
• Blood clots that may partially or fully block a blood vessel.
• Heart conditions, such as heart failure, that make it harder for the heart to pump blood effectively.
• Low blood pressure, which can reduce the force of blood flow to organs and limbs.
• Peripheral artery disease: narrowed arteries in the legs that reduce blood supply.

Risk factors

• Smoking or using tobacco products
• High blood pressure
• High cholesterol or high levels of fats in the blood
• Diabetes
• Being overweight or obese
• Lack of physical activity
• Family history of heart or circulatory disease
• Age, as the risk increases over 50

When to see a doctor

See a doctor urgently if:

• New or worsening chest pain
• Sudden severe headache or weakness on one side of the body
• Breathing difficulty that is not due to usual exertion
• Swelling, warmth, or pain in a single leg

Book a routine appointment if:

• If you have diabetes, high blood pressure, or high cholesterol, have regular check-ups with your healthcare team.
• See your doctor if you often feel faint, dizzy, or very tired.
• Ask about your circulation if you have risk factors like smoking or a family history of heart disease.

Diagnosis

To assess your circulation, a healthcare professional will ask about your symptoms, your medical history, and any risk factors. They will also check your pulse, blood pressure, and examine your limbs for signs of reduced blood flow.

Tests that may be done

• Blood pressure measurement
• Blood tests for cholesterol, blood sugar, and other markers
• Ankle-brachial index: a test that compares blood pressure in the ankle and arm
• Ultrasound examination of the blood vessels
• An electrocardiogram (ECG) to check the heart's rhythm and activity

What to expect at your appointment

Most circulation tests are simple, quick, and painless. If a blockage is found, your doctor will explain the next steps and help you decide on the best way forward.

Treatment

Treatment for circulation problems depends on the cause and how severe it is. The main goals are to relieve symptoms, improve blood flow, and reduce the risk of heart attack or stroke. Treatment usually starts with lifestyle changes, and may include medication or a procedure to open blocked arteries.

Self-care at home

• Take regular walks, starting slowly and building up gradually
• Elevate your legs when resting to help reduce swelling
• Avoid standing or sitting for long periods without moving
• Keep your feet warm and check them daily for cuts or sores
• Quit smoking and avoid second-hand smoke
• Maintain a weight that is healthy for you

Medical treatments

Depending on the underlying issue, a doctor may recommend medicines to lower blood pressure, reduce cholesterol, prevent blood clots, or manage blood sugar. These are prescribed individually. In some cases, a procedure may be used to widen a narrowed blood vessel or bypass a blockage. Your healthcare team will explain all your options and the reasons for their recommendations.

When is surgery considered?

Surgery is considered when a blood vessel is severely narrowed or blocked and symptoms are not controlled by lifestyle changes or medicine. There are several types of procedures, including angioplasty, which uses a tiny balloon to widen an artery, and bypass surgery, which creates a new route for blood to flow around a blockage.

Living with this condition

Living with a circulation problem is about being consistent with your self-care and medical appointments. Make small, enjoyable changes to your routine, and keep a simple record of symptoms to share with your doctor. You do not have to let circulation issues define everyday life.

Lifestyle tips

• Stay physically active with activities you enjoy, like walking, swimming, or cycling
• Manage stress with relaxation techniques, breathing exercises, or hobbies
• Get enough sleep to let your body recover
• Limit alcohol and avoid smoking
• Take your prescribed medicines exactly as directed

Diet and exercise

A heart-healthy diet includes plenty of vegetables, fruit, whole grains, and lean proteins, with limited salt, added sugar, and processed foods. Exercise is one of the best ways to improve circulation. The general recommendation is about 150 minutes of moderate activity per week, but any amount of movement is better than none.

Mental health and emotional wellbeing

Having a circulation problem can sometimes cause worry or low mood, especially if it limits your activities. It is normal to feel frustrated or anxious. Talk to your healthcare team about how you feel—they can offer support and help you find services in your community.

Prevention

Many circulation problems can be prevented or slowed down by taking care of your heart and blood vessels. Maintaining a healthy lifestyle is the most powerful way to protect your circulation.

Vaccines

Vaccinations, such as the flu vaccine and COVID-19 vaccine, are not specifically for circulation, but they help prevent illnesses that could put extra strain on your heart and blood vessels. Ask your local health service which vaccines are recommended for you.

Screening programmes

Regular checks of your blood pressure, cholesterol, and blood sugar can catch early signs of damage to blood vessels. If you have a family history of heart disease or other risk factors, talk to your doctor about how often you should be screened.

Complications

If left untreated

• Untreated circulation problems can lead to heart attack or stroke.
• Narrowed or blocked arteries in the legs can cause severe pain and, in advanced cases, leg ulcers or tissue damage.
• Reduced blood flow to the kidneys can affect kidney function over time.

Long-term outlook

There is much that can be done to improve circulation. With early detection and modern treatment, many people live active and full lives. Even after a diagnosis, positive changes in daily habits can make a real difference.

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