Final answer:
LDL is commonly known as "bad" cholesterol because high levels can lead to plaque buildup in the arteries and increase the risk of heart disease. It is important to maintain low LDL levels and high HDL levels for cardiovascular health.
Step-by-step explanation:
LDL is often referred to as "bad" cholesterol. LDL, or Low-Density Lipoprotein, is known as 'bad' because a high level of LDL in the bloodstream leads to the buildup of plaque in the arteries. This can result in increased risk of cardiovascular diseases such as heart attacks and strokes. LDL carries cholesterol from the liver to other tissues, whereas HDL (High-Density Lipoprotein), often referred to as 'good' cholesterol, carries cholesterol back to the liver to be removed from the body. Therefore, having a low level of LDL and a high level of HDL is desirable to maintain healthy arteries and cardiovasculature. To manage cholesterol levels, it is recommended to follow a diet low in saturated fat, partake in regular aerobic exercise, and possibly include supplements like omega-3 fatty acids which promote lower overall cholesterol levels.