For decades now, doctors and healthcare professionals have warned us about the dangers of high cholesterol levels. Many of us have heard that high cholesterol can lead to an increased risk of heart disease, heart attacks, and stroke.

However, recent studies suggest that the dangers of cholesterol may be even more significant than we previously thought.

What Is Cholesterol?

Cholesterol is a waxy, fatty substance found in the bloodstream and cells in our bodies. While some cholesterol is necessary to keep our bodies healthy, too much can be dangerous.

When there is an excess of cholesterol in the bloodstream, it can build up on artery walls, causing them to narrow and harden. This buildup can increase the risk of heart disease and other health problems.

The Evolution of Cholesterol Thinking

In the past, many doctors and healthcare professionals believed that only certain types of cholesterol posed a danger to our health. In particular, they focused on low-density lipoproteins (LDL) — also known as the “bad” cholesterol.

Recent research, however, suggests that other types of cholesterol, including high-density lipoproteins (HDL), may also influence our health in ways previously unrealized.

While HDL cholesterol has been associated with improved heart health, recent studies indicate that high levels of HDL may not be as protective as once thought.

For example, researchers have found that individuals with genetically high levels of HDL do not necessarily have better heart health.

Additionally, triglycerides — another type of fat found in the bloodstream — may also play a role in heart health. High levels of triglycerides are associated with an increased risk of heart disease and other health problems.

Cholesterol and Alzheimer’s Disease

Recent research also suggests that cholesterol may be involved in the development of Alzheimer’s disease.

Studies have found that individuals with elevated cholesterol levels are more likely to develop Alzheimer’s disease, even if they do not have other risk factors such as high blood pressure or obesity.

Additionally, researchers have found that the buildup of amyloid plaques — a hallmark of Alzheimer’s disease — may be influenced by cholesterol.

In laboratory studies, researchers have found that cholesterol can lead to the accumulation of these plaques in the brain.

Other Health Risks Associated with High Cholesterol

Heart disease and Alzheimer’s disease are not the only health risks associated with high cholesterol levels. Other risks include:.

Stroke
Peripheral artery disease (PAD)
High blood pressure
Type 2 diabetes

Individuals with high cholesterol levels are at an increased risk for these and other health problems.

How to Lower Cholesterol Levels

If you have high cholesterol, there are steps you can take to lower your levels and reduce your risk of heart disease and other health problems. These steps include:.

Following a healthy diet that is low in saturated and trans fats
Engaging in regular exercise
Maintaining a healthy weight
Quitting smoking
Taking medications, if necessary

In some cases, lifestyle changes may not be enough to lower cholesterol levels. In these situations, a doctor may prescribe medication to help manage cholesterol levels.

The Bottom Line

Cholesterol is an essential substance in our bodies, but too much can be dangerous. Recent research suggests that the risks associated with high cholesterol may be even more significant than previously thought.

Individuals should take steps to manage their cholesterol levels to reduce their risk of heart disease, Alzheimer’s disease, and other health problems.