Can High Cholesterol Make You Feel Tired?

It is a common misconception that high cholesterol, a condition affecting millions in the UK, is a silent disease with no discernible symptoms until a major cardiovascular event occurs. While it is true that high cholesterol often goes unnoticed, many individuals report experiencing a persistent sense of fatigue and tiredness. This raises an important question: can high cholesterol make you tired? In this article, we will explore the intricate relationship between elevated cholesterol levels and fatigue, providing insights from the perspective of Dr Sveeta Badiani, a distinguished cardiologist.

Understanding High Cholesterol

Cholesterol is a waxy, fat-like substance that is essential for the body to build healthy cells, produce hormones, and make vitamin D. However, when the level of cholesterol in the blood becomes too high, it can lead to serious health problems. There are two main types of cholesterol: low-density lipoprotein (LDL) and high-density lipoprotein (HDL). LDL is often referred to as “bad cholesterol” because it can build up in the walls of your arteries, making them harder and narrower. HDL, or “good cholesterol,” picks up excess cholesterol and takes it back to your liver.

When there is too much LDL cholesterol in the blood, it can combine with other substances to form plaque. This plaque sticks to the walls of your arteries, a condition known as atherosclerosis. Over time, this plaque buildup can narrow the arteries and restrict blood flow, which is the primary reason high cholesterol can lead to a feeling of fatigue.

The Indirect Link Between High Cholesterol and Fatigue

While high cholesterol itself does not directly cause fatigue, the complications and effects it has on the body can lead to a significant decrease in energy levels. Dr Sveeta Badiani explains that the link is often indirect, stemming from the body’s response to the changes caused by high cholesterol.

Reduced Blood Flow and Oxygen Supply

The most significant way high cholesterol contributes to fatigue is by impeding blood flow. As plaque accumulates in the arteries, they become less flexible and narrower, a process that can occur throughout the body. This means that less oxygen-rich blood can reach your muscles and organs. When your muscles and tissues do not receive enough oxygen, they cannot function optimally, leading to a feeling of tiredness and a lack of stamina. This can be particularly noticeable during physical activity, but it can also manifest as a constant state of exhaustion even when at rest.

Increased Workload on the Heart

When the arteries are narrowed, the heart has to work much harder to pump blood throughout the body. This increased effort can be taxing on the heart muscle over time, leading to a general sense of fatigue. It is a subtle but persistent strain on the body’s primary engine, which can leave you feeling drained. Dr Sveeta Badiani notes that this is often one of the earliest and most overlooked signs that high cholesterol is beginning to affect the cardiovascular system.

Inflammation and the Body’s Response

High cholesterol can also trigger a low-grade inflammatory response in the body. The presence of plaque in the arteries is recognized by the immune system as an injury, leading to chronic inflammation. This persistent state of inflammation can contribute to feelings of fatigue and malaise. The body is in a constant state of alert, diverting energy to manage the inflammation, which can leave you feeling perpetually tired.

Beyond Fatigue: Recognising Other Warning Signs

Fatigue is not the only symptom that can be associated with the complications of high cholesterol. It is important to be aware of other potential warning signs that may indicate your cholesterol levels are affecting your health. 

The Role of Lifestyle and Professional Guidance

Managing high cholesterol and combating the associated fatigue involves a combination of lifestyle modifications and, in some cases, medication. Dr Sveeta Badiani advises her patients to adopt a heart-healthy lifestyle, which includes a balanced diet, regular exercise, and stress management.

A diet rich in fruits, vegetables, whole grains, and lean proteins can help to lower LDL cholesterol levels. Regular physical activity can help to raise HDL cholesterol levels and improve overall cardiovascular health. It is also important to avoid smoking and to limit alcohol consumption.

In addition to lifestyle changes, your doctor may prescribe medication to help lower your cholesterol levels. Statins are the most commonly prescribed medication for high cholesterol, and they work by blocking the substance your body needs to make cholesterol.