ldl and hdl are lipoproteins, so they are made of fat and protein. ldl isnt necessarily bad for you, only if your ldl is too small and dense.

Theres 4 types of cholesterol, ldl hdl trigs and sterols. ldl and hdl are lipoproteins, so they are made of fat and protein. ldl isnt necessarily bad for you, only if your ldl is too small and dense.