Low-density lipoprotein (LDL) is one of the five major groups of lipoproteins. These groups, from least dense to most dense, are chylomicrons, very low-density lipoprotein (VLDL), intermediate-density lipoprotein (IDL), low-density lipoprotein and high-density lipoprotein (HDL), all of which are far smaller than human cells. In nutrition, LDL is sometimes referred to as the "bad cholesterol"; however, this is a misleading misnomer. LDL and cholesterol are completely different molecules – LDL is about 10 times larger in diameter than cholesterol (~200 angstroms compared with ~20 angstroms).