LDL carries cholesterol from the liver to other body cells. HDL does the opposite, carrying extra cholesterol back to the liver for processing. The cholesterol that ends up back in the liver gets made into hormones and bile acids. That is what causes areterial blockage. Cutting down on the amount of cholesterol you eat helps some.
Dietary fiber helps a lot, especially soluble fiber.
Soluble fiber binds up those bile acids in your intestine and causes them to be excreted. So then your liver has to use up cholesterol to make more bile acids. Without fiber, bile acids are not excreted, but are reabsorbed and recycled. Knowing that early detection reduces the risk of death from breast cancer, many women perform routine breast self-examinations. Ironically, doing so might actually deter detection.