Both HDL and LDL are both needed to keep a balance in the body for it to function properly.
HDL foods are usually referred to healthy fats. HDL helps transports wastes to the liver because too much cholesterol can clog arteries in the body.
LDL is used to transport cholesterol to the cells in which they need to function properly and move around the body. Too much LDL can clog up arteries making it hard for blood and oxygen to transport around the body when needed.