cholesterol on one side

Overview

This refers to a buildup of cholesterol in the arteries that supply blood to one side of your body, often one leg. It narrows the blood vessels and reduces blood flow, which can cause pain, cramps, or coldness in that limb.

Yes, it is common, especially in people over 50 or those with risk factors like smoking or diabetes.

It mainly affects people who smoke, have diabetes, high blood pressure, high cholesterol, or are overweight. It also becomes more common as you age.

Symptoms

Common symptoms

• Pain or cramping in one leg when you walk or climb stairs, which goes away with rest
• Coldness in one foot or leg compared to the other
• Numbness or weakness in one leg
• Sores on the foot or leg that are slow to heal
• Hair loss or shiny skin on one leg
• Weak or no pulse in the affected leg or foot

Symptoms in children

• Rare, but if it happens, leg pain during activity or playing sports
• Unusual tiredness in one leg
• Coldness or pale color in one foot

Symptoms in older adults

• Similar symptoms as in younger adults, but may be less noticeable if activity levels are lower
• Frequent leg pain or cramps at night
• Difficulty keeping the leg warm
• Sores or infections that heal slowly

Causes

Main causes

• Atherosclerosis – a buildup of cholesterol and other fats inside the artery walls, which narrows the artery. This can happen on one side because the blockages are often uneven.

Risk factors

• Smoking or using tobacco
• Diabetes
• High cholesterol levels
• High blood pressure
• Obesity
• Being over 50
• Family history of heart or blood vessel disease

When to see a doctor

See a doctor urgently if:

• If you have sudden severe leg pain, coldness, or change in color – call your local emergency number immediately.
• If you have a leg sore that is getting bigger or infected, see a doctor the same day.

Book a routine appointment if:

• If you have leg pain or cramping when walking that goes away with rest
• If one foot is always colder than the other
• If you have a non-healing sore on your foot or leg
• If you have diabetes and notice any foot changes

Diagnosis

Your doctor will ask about your symptoms, check your medical history, and do a physical exam. They will feel for pulses in your legs and feet and compare the temperature and color of your limbs.

Tests that may be done

• Ankle-brachial index (ABI) – a painless test that compares blood pressure in your ankle to your arm
• Ultrasound – uses sound waves to see blood flow in the arteries
• Angiogram – a special X-ray with dye to see blockages (not always needed)

What to expect at your appointment

The tests are usually quick and painless. The doctor will explain the results and work with you on a treatment plan. You may also be referred to a specialist in heart and circulation.

Treatment

Treatment focuses on improving blood flow, relieving symptoms, and preventing the condition from getting worse. This includes lifestyle changes, medicines, and sometimes procedures.

Self-care at home

• Stop smoking – this is the most important step you can take
• Walk regularly – start slowly and gradually increase, rest when needed
• Take good care of your feet – check them daily for cuts or sores
• Control your blood sugar if you have diabetes
• Eat a heart-healthy diet low in saturated fat and salt

Medical treatments

Your doctor may prescribe medicines to lower cholesterol, reduce blood pressure, prevent blood clots, or manage pain. Never stop or change your medicines without talking to your doctor.

When is surgery considered?

If symptoms are severe or if the blockage is causing serious problems, a doctor may recommend a procedure such as angioplasty (opening the artery with a small balloon) or bypass surgery to reroute blood flow around the blockage.

Living with this condition

You can live a full and active life by managing your risk factors and following your treatment plan. Pay attention to your legs and feet, and let your doctor know about any changes.

Lifestyle tips

• Quit smoking – get help from a program or your doctor
• Exercise for 30 minutes most days, like walking or swimming
• Keep a healthy weight
• Manage stress with relaxation techniques or hobbies

Diet and exercise

Eat plenty of fruits, vegetables, whole grains, and lean protein. Limit foods high in saturated fat, trans fat, salt, and sugar. Ask your doctor about a safe exercise plan that includes walking on a regular basis.

Mental health and emotional wellbeing

Living with a chronic condition can be stressful. You may feel worried or frustrated. Talk to your doctor if you feel down or anxious – support is available.

Prevention

You can lower your risk by not smoking, eating a healthy diet, staying active, managing your weight, and keeping your blood pressure and cholesterol in check. If you have diabetes, good blood sugar control is essential.

Screening programmes

If you have risk factors, your doctor may check your blood pressure, cholesterol, and blood sugar regularly. A simple ABI test can detect problems early.

Complications

If left untreated

• Chronic leg pain that limits walking
• Non-healing sores or infections on the leg or foot
• Tissue death (gangrene) that may require amputation
• Increased risk of heart attack or stroke

Long-term outlook

With the right treatment and lifestyle changes, many people improve and can avoid serious problems. The key is to act early and stick with your treatment plan. Most people can manage their symptoms and live a good quality of life.

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