Which form of cholesterol is known as "bad cholesterol" due to its association with heart disease?

Cholesterol is a substance found in the blood that is vital for the body's functioning, but having the right balance is crucial for maintaining cardiovascular health. Low-Density Lipoprotein (LDL) is often referred to as "bad cholesterol" because high levels of LDL can lead to the buildup of plaque in the arteries. This buildup can result in atherosclerosis, a condition that narrows the arteries and significantly increases the risk of heart disease and stroke.

In contrast, High-Density Lipoprotein (HDL) is considered "good cholesterol" as it helps remove cholesterol from the bloodstream and transport it to the liver for excretion. Very-Low-Density Lipoprotein (VLDL) primarily carries triglycerides, another type of fat, and while it can contribute to plaque buildup, it is not classified in the same way as LDL. Triglycerides, while related to heart health, are a different type of fat entirely. Thus, the association of LDL with adverse cardiovascular events makes it the form of cholesterol that is commonly labeled as "bad cholesterol."