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Atherosclerosis is a potentially serious condition where arteries become clogged with fatty substances called plaques, or atheroma.
These plaques cause the arteries to harden and narrow, restricting the blood flow and oxygen supply to vital organs, and increasing the risk of blood clots that could potentially block the flow of blood to the heart or brain.
Atherosclerosis doesn't tend to have any symptoms at first, and many people may be unaware they have it, but it can eventually cause life-threatening problems such as heart attacks](/condition/heart-attack) and [strokes if it gets worse.
However, the condition is largely preventable with a healthy lifestyle, and treatment can help reduce the risk of serious problems occurring.
This page covers:
Who's at risk
Tests and diagnosis
Reduce your risk
If left to get worse, atherosclerosis can potentially lead to a number of serious conditions known as cardiovascular disease (CVD) . There won't usually be any symptoms until CVD develops.
Types of CVD include:
Click on the links above for more information about these conditions, including what the main symptoms and risks are.
Exactly why and how arteries become clogged is unclear.
It can happen to anyone, although the following things can increase your risk:
You can't do anything about some of these factors, but by tackling things such as an unhealthy diet and a lack of exercise, you can help reduce your risk of atherosclerosis and CVD.
Read more about the risk factors for CVD .
Speak to your doctor if you're worried you may be at a high risk of atherosclerosis.
Your doctor or practice nurse can work out your level of risk by taking into account factors such as:
Depending on your result, you may be advised to make lifestyle changes, consider taking medication, or have further tests to check for atherosclerosis and CVD.
Making healthy lifestyle changes can reduce your risk of developing atherosclerosis and may help stop it getting worse.
The main ways you can reduce your risk are:
Click on the links above for more information. You can also read more specific advice about preventing CVD .
There aren't currently any treatments that can reverse atherosclerosis, but the healthy lifestyle changes suggested above may help stop it getting worse.
Sometimes additional treatment to reduce the risk of problems like heart attacks and strokes may also be recommended, such as:
Click on the links above for more information about what these treatments involve.
Important: Our website provides useful information but is not a substitute for medical advice. You should always seek the advice of your doctor when making decisions about your health.