Cholesterol is a substance that your liver produces naturally. It’s vital for the formation of cell membranes, vitamin D, and certain hormones.
Cholesterol is a waxy, fat-like substance. It doesn’t dissolve in water and therefore can't travel through the blood by itself. Lipoproteins are other particles formed in the liver that help transport cholesterol through the bloodstream. There are several major forms of lipoproteins that are important to your health
Low-density lipoproteins (LDL), also known as "bad cholesterol," may build up in the arteries and lead to serious health problems like a heart attack or stroke. High-density lipoproteins (HDL), sometimes called "good cholesterol," help return the LDL cholesterol to the liver for elimination.
Your liver produces all the cholesterol that you need, but fats and cholesterol are present in many of the foods we eat nowadays. Eating too many foods that contain excessive amounts of fat increase the level of LDL cholesterol in your blood. This is called having high cholesterol. High cholesterol is also called hypercholesterolemia. High cholesterol is especially dangerous when HDL cholesterol levels are too low and LDL cholesterol levels are too high.
High cholesterol typically causes no symptoms. It’s important to eat healthy and regularly monitor your cholesterol levels. When left untreated, high cholesterol can lead many health problems including a heart attack or stroke