Lipoproteins are complex particles made of lipids (fats) and proteins that transport fats through the bloodstream. They play a crucial role in moving cholesterol and triglycerides, which are essential for energy and cell function, to various tissues in the body. There are several types of lipoproteins, including low-density lipoprotein (LDL) and high-density lipoprotein (HDL), each serving different functions in lipid transport. The balance between different lipoproteins is important for maintaining heart health. High levels of LDL are often associated with an increased risk of heart disease, while HDL is known to help remove excess cholesterol from the bloodstream. Monitoring lipoprotein levels can provide valuable insights into an individual's cardiovascular health.